The Mansion on the Sea - Southernmost House in the USA

4.0 star property
Adults-only beach hotel with outdoor pool

Choose dates to view prices

Photo gallery for The Mansion on the Sea - Southernmost House in the USA

Mansion Room #201 - Ocean View with private balcony - Adults Only | Terrace/patio
Terrace/patio
Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only | Premium bedding, pillowtop beds, individually furnished
Front of property - evening/night
Bungalow #101 -Ocean Front - Adults Only | Living area | 42-inch flat-screen TV with cable channels, TV, streaming services

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Bar
  • Room service

Explore the area

Map
1400 Duval Street, Key West, FL, 33040
  • Duval Street
    ‪1 min walk‬
  • South Beach
    ‪1 min walk‬
  • Southernmost Point
    ‪2 min walk‬
  • Key West, FL (EYW-Key West Intl.)
    ‪8 min drive‬

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Room options

Mansion Room #204 - Courtyard View - Adults Only

  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

Mansion Room #107 - Ocean View - Adults Only

  • 500 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Mansion Room #203 - Courtyard View - Adults Only

  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

Bungalow #101 -Ocean Front - Adults Only

  • 500 sq ft
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed OR 1 King Bed

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

  • 500 sq ft
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

Mansion Room #201 - Ocean View with private balcony - Adults Only

  • 500 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Mansion Room #202 - Ocean View - Adults Only

  • 300 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

  • 300 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

  • 700 sq ft
  • Partial ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

  • 500 sq ft
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

Bungalow #102 - Pool View - Adults Only

  • 400 sq ft
  • Sleeps 4
  • 1 Queen Bed and 1 Double Sofa Bed

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

  • 300 sq ft
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

Mansion Room #303 - Courtyard View - Adults Only

  • 500 sq ft
  • City view
  • Sleeps 4
  • 2 Queen Beds

Lopez House #109 - Courtyard View - Adults Only

  • 500 sq ft
  • Sleeps 2
  • 1 Queen Bed

Lopez House #205 - Partial Ocean View - Adults Only

  • 500 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Lopez House #206 - Partial Ocean View - Adults Only

  • 500 sq ft
  • Ocean view
  • Sleeps 2
  • 1 King Bed

Lopez House #207 - Courtyard View - Adults Only

  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

Bungalow #103 - Pool View - Adults Only

  • 300 sq ft
  • Sleeps 2
  • 1 Queen Bed

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About the neighborhood

Key West

Located in Old Town Key West, The Mansion on the Sea - Southernmost House in the USA is next to popular attractions like Southernmost Point and Duval Street. This 18-room, 4-star hotel has free breakfast, an outdoor pool, and free in-room WiFi.

What's nearby

  • Duval Street - 1 min walk - 0.0 miles
  • South Beach - 1 min walk - 0.0 miles
  • Southernmost Point - 2 min walk - 0.1 miles
  • Ernest Hemingway Home and Museum - 8 min walk - 0.4 miles
  • Mallory Square - 4 min drive - 1.1 miles

Getting around

  • Key West Intl. Airport (EYW) - 9 min drive

Restaurants

  • ‪Old Town Tavern Key West - ‬9 min walk
  • ‪Southernmost Beach Café - ‬1 min walk
  • ‪Southernmost Point Bar In the USA - ‬5 min walk
  • ‪Rum Bar at the Speakeasy Inn - ‬5 min walk
  • ‪Banana Cafe - ‬4 min walk

About this property

The Mansion on the Sea - Southernmost House in the USA

Adults-only beach hotel with outdoor pool
At The Mansion on the Sea - Southernmost House in the USA, guests have access to an outdoor pool, free WiFi in public areas, and coffee in a common area. Self parking is available for USD 25 per night. The front desk has multilingual staff that can help with tours or tickets, luggage storage, and securing valuables. Other amenities at this adults-only hotel include free newspapers, a terrace, and a gift shop.
Guests can expect free WiFi and 42-inch flat-screen TVs with cable channels. Pillowtop beds sport premium bedding and bathrooms offer hair dryers and designer toiletries. Coffee makers, free newspapers, and ironing boards are also standard. Housekeeping is available on request.
Recreational amenities at the hotel include an outdoor pool.

The recreational activities listed below are available either on site or nearby; fees may apply.

Languages

English, French, Russian, Spanish

Similar properties

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • In-room WiFi speed: 500+ Mbps (good for 6+ people or 10+ devices)
  • Available in some public areas: Free WiFi

Parking and transportation

  • Self parking on site (USD 25 per night)

Food and drink

  • Free continental breakfast available daily 8:00 AM to 10:00 AM
  • A bar/lounge
  • A poolside bar
  • A restaurant
  • Coffee and tea in common areas
  • Snack bar/deli

Restaurants on site

  • Seaside Cafe at Mansion

Things to do

  • Outdoor pool
  • Shopping
  • TV in common areas

Conveniences

  • Free newspapers in lobby
  • Gift shop/newsstand
  • Limited-hour front desk
  • Luggage storage
  • Safe at front desk

Guest services

  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Porter/bellhop
  • Proposal/romance packages
  • Tour and ticket assistance
  • Wedding services

Outdoors

  • Beach loungers
  • Beach towels
  • Garden
  • On the waterfront
  • Outdoor furniture
  • Picnic area
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Upper floors accessible by stairs only
  • Well-lit path to entrance

More

  • 3 buildings
  • 3 floors
  • Built in 1897
  • Designated smoking areas
  • Reception hall
  • Victorian architecture

Room amenities

Bedroom

  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Designer toiletries
  • Hair dryer
  • Shampoo
  • Shower
  • Soap
  • Toilet paper
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with premium cable channels
  • Streaming services

Food and drink

  • Champagne service
  • Coffee/tea maker
  • Room service

More

  • Air conditioning
  • Free daily newspapers
  • Individual furnishings
  • Iron/ironing board

Policies

Check-in

Check-in start time: 4 PM; Check-in end time: 10 PM
Early check-in subject to availability
Contactless check-in available
Late check-in subject to availability
Minimum check-in age: 18

Check-out

Check-out before 11 AM
Contactless check-out available

Special check-in instructions

The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation

Access methods

Front desk (limited hours)

Pets

  • This property doesn't allow pets

Children and extra beds

  • Children younger than 18 are not permitted to stay at this adults-only property (only guests 18 and older are allowed)

Property payment types

Important information

Fees

You'll be asked to pay these charges at the property:

  • Spring Break deposit: USD 250 per stay for guests under 21 years old staying between 1 March - 31 March

These are all of the charges provided to us by the property.

Optional extras

These fees and deposits will be charged at check-in, check-out, or the time of service.

  • Self parking fee: USD 25 per night

This list may not be comprehensive. Fees and deposits might not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher, and a smoke detector
This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room
  • Check-in: 4 PM
  • Check-out: 11 AM
  • Minimum check-in age: 18
The front desk is available during limited hours. Driving? This property offers parking (fees apply).

We should mention

Details about charges, deposits, or other important information:

  • This property is managed by a professional host. The provision of housing is linked to their trade, business, or profession.
  • This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children. If you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room.
  • Charges for extra guests may apply and vary depending on the property's policy.
  • A cash deposit, credit card, or debit card for incidental charges, as well as a government-issued photo ID, may be required at check-in.
  • Special requests are subject to availability at the time of check-in and can't be guaranteed. Certain requests may come with additional charges.
  • The minimum check-in age for Spring Break is 24 years old.
  • This property accepts credit cards. Cash is not accepted. 
  • Onsite safety features include a carbon monoxide detector, a fire extinguisher, and a smoke detector.

Additional information about polices, regulations, and more:

  • Registered guests are the only ones allowed in guestrooms.
  • There are no elevators.
  • No cribs or infant beds are available.
  • Noise-free rooms can't be guaranteed.

Property is also known as

Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West

Frequently asked questions

What's there to see around The Mansion on the Sea - Southernmost House in the USA?

This hotel is situated in Old Town Key West, just steps from Duval Street and Southernmost Point, and within a short walk of Florida Keys Beaches. You'll also find South Beach and Ernest Hemingway Home and Museum less than a mile away.

How much does it cost to stay at The Mansion on the Sea - Southernmost House in the USA?

As of Jun 15, 2025, prices found for a 1-night stay for 2 adults at The Mansion on the Sea - Southernmost House in the USA on Jul 6, 2025 start from $229.0, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

Will I be able to park at The Mansion on the Sea - Southernmost House in the USA?

Yes, parking is offered for USD 25 per night.

Does The Mansion on the Sea - Southernmost House in the USA include a casino at the property?

No, The Mansion on the Sea - Southernmost House in the USA doesn't have a casino.

Is there an indoor pool at The Mansion on the Sea - Southernmost House in the USA?

No, this hotel doesn't have an indoor pool; however, there is an outdoor pool.

Is The Mansion on the Sea - Southernmost House in the USA good for couples?

This adults-only hotel offers many amenities for couples, including Champagne service as well as an outdoor pool and a poolside bar.

Does The Mansion on the Sea - Southernmost House in the USA have a hot tub?

No, there isn't a spa tub at this hotel.

Does The Mansion on the Sea - Southernmost House in the USA feature a restaurant that includes a breakfast menu?

Yes, The Mansion on the Sea - Southernmost House in the USA serves free continental breakfast at Seaside Cafe at Mansion each morning.

Does The Mansion on the Sea - Southernmost House in the USA allow pets to stay free of charge?

No, pets aren't allowed at The Mansion on the Sea - Southernmost House in the USA.

Are there connecting rooms at The Mansion on the Sea - Southernmost House in the USA?

No, there aren't connecting guestrooms at this hotel.

How far is the airport from The Mansion on the Sea - Southernmost House in the USA?

The closest major airport to The Mansion on the Sea - Southernmost House in the USA is Key West Intl. Airport (EYW), which is 3.3 mi away (9 minutes by car).

Can I book a room with a balcony at The Mansion on the Sea - Southernmost House in the USA?

Yes, some guestrooms at this hotel offer either a balcony or a porch where guests can enjoy ocean or pool views.

Does The Mansion on the Sea - Southernmost House in the USA have a wedding venue on site?

If wedding bells are in your future, take advantage of the wedding venue at The Mansion on the Sea - Southernmost House in the USA.

The Mansion on the Sea - Southernmost House in the USA Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 748 out of 1003 reviews
Rating 8 - Good. 164 out of 1003 reviews
Rating 6 - Okay. 59 out of 1003 reviews
Rating 4 - Poor. 21 out of 1003 reviews
Rating 2 - Terrible. 11 out of 1003 reviews

9.4/10

Cleanliness

9.4/10

Staff & service

9.2/10

Amenities

9.0/10

Property conditions & facilities

9.2/10

Eco-friendliness

Reviews

10/10 Excellent

J Charles Mowrer

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful property, the room was clean and spacious. The staff was fantastic.
Stayed 4 nights in May 2025

10/10 Excellent

John

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Overly enjoyable stay in a magnificent property, everyone is so helpful and they had everything we needed!
Stayed 3 nights in Apr 2025

10/10 Excellent

Alexander

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great location and wonderful staff. Breakfast was awesome!
Stayed 3 nights in Mar 2025

10/10 Excellent

Jim

Liked: Staff & service
Stayed 2 nights in Mar 2025

10/10 Excellent

Susan L

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
we loved mansion on the sea ! will definitely be back ps and the breakfast was outstanding!
Stayed 2 nights in Mar 2025

6/10 Okay

joseph

Closeness to dining and entertainment and The sea.
Stayed 3 nights in Mar 2025

10/10 Excellent

Beth

Traveled with group
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Can't wait to return

Loved every part of our stay at the quaint Hotel. We had a door that led to the pool, so nice. Perfect get away.
Stayed 3 nights in Feb 2025

10/10 Excellent

Rhea

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

richard

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
First time staying here and we loved it! Definitely returning next year ! Entire staff and general manager Nina are super friendly and accommodating . This is an old historical mansion with wonderful views of the ocean and in a great location !
Stayed 4 nights in Feb 2025

10/10 Excellent

Matthew

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great
Stayed 1 night in Mar 2025

6/10 Okay

Neil

Traveled with partner
Liked: Staff & service, amenities
Disliked: Property conditions & facilities
Two historic (previously) homes with rooms that have been turned into sleeping/convenience suites. Not a modernized hotel experience if that is what yo are seeking. Very antiqueish, unique, and rustic and right on the oceanside - however there is no beach area for this hotel. Buildings and rooms retain an authentic old-style appearance but look to have been remodeled some time ago and are in need of basic or new repairs & maintenance - everything inside and outside, as well as the garden grounds, seem a bit shabby, neglected, and not getting the regular "professional" care that such a place deserves - shameful. Parking is good. Continental breakfast is good. Staff is friendly. Location is excellent and very convenient for walking, biking, and commuting everywhere in Key West, Duval St., and oceanside areas. Many bars, shops, and other "adult" related entertainments nearby but the Key West area is kind of sleazy and very touristy focused - not the best area for bringing kids or for those who do not care to drink and party.

10/10 Excellent

Nicholas V

Stayed 3 nights in Feb 2025

10/10 Excellent

Kelli

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 2 nights in Jan 2025

10/10 Excellent

Katherine

Traveled with partner
Liked: Staff & service, property conditions & facilities
Staff were excellent! Room was clean!! Didn’t like the 3rd floor walk up!!
Stayed 3 nights in Feb 2025

10/10 Excellent

Paul

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Ami

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff was very friendly and helpful. The room was delightful and very clean. Breakfast was very good. We loved spending time on the balcony and at the heated pool. We loved having the resort feel with no crowd.
Stayed 5 nights in Feb 2025

10/10 Excellent

Kathleen

Liked: Cleanliness, staff & service, property conditions & facilities
I could walk out to pool and get a chair at the pool, always available.
Stayed 4 nights in Feb 2025

10/10 Excellent

Steve

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Jim

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great pool. Ocean views.
Stayed 4 nights in Feb 2025

10/10 Excellent

Andrew

Traveled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Perfect get away
Stayed 1 night in Feb 2025

10/10 Excellent

Bonnie

The breakfast was wonderful and the desk staff were extremely helpful.
Stayed 2 nights in Feb 2025

10/10 Excellent

Debra

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Mansion at Southernmost House

Beautiful property, very friendly staff, and great location.
Stayed 3 nights in Feb 2025

10/10 Excellent

Ellen

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 1 night in Feb 2025

10/10 Excellent

Gerald

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Great and Relaxing week at the Mansion

Everything about the Mansion was very good. The staff was friendly and very professional. The breakfast was very nice and met all of our needs. Our room was clean and service was very efficient. The grounds were a pleasure to explore and use, especially the pool which provided a view of the ocean. Thank you
Stayed 5 nights in Feb 2025

10/10 Excellent

Edward

Liked: Staff & service, property conditions & facilities
Staff and location could not have been nicer.
Stayed 4 nights in Jan 2025