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Grassy Flats Resort & Beach Club

2.5 out of 5.0

Grassy Flats Resort & Beach Club

2.5 out of 5.0

Recent guest reviews

Grassy Flats is the place to be! The general Keys location, hospitality, amenities, view and price point, they have it all! Rooms are very spacious and comfortable. The pool is amazing! Especially love how the pool has a shallow tanning/wading area which allowed for my son and I to play and hangout. The best part of our stay was the ability to get out on the Hobie Cat's available at the resort!! Talk about fun, these things are next level! Being able to walk out of your resort and straight into the ocean onto a Hobie is above and beyond. To top it all off it was nice to walk right back into the resort and be able to enjoy a cocktail at the Tiki Bar. To me having everything right there for you to take advantage of makes for a smooth and entertaining vacation. We will definitely be staying here again for all of our Keys vacations!

Amazing Hotel, great staff, always available and attentive Very simple yet classy and beautiful !!! Everything and Anything you need is right there I highly recommend and will be back with family and friends

Private and nice. It's a kitesurfing paradise and is very close to a cool cable park with experienced staff to teach you new skills. Shallow water flats just in front that offer great shots at tarpon and bonefish. It's a quaint place with a relaxing bar and excellent views. It's in a remote area with quiet nights, but close enough to nice places to take in local fish dinners and cold beers. A great family location that offers something for all.

Had an amazing stay here! Super friendly and helpful staff, clean and comfortable rooms, stunning pool and bar. We will definitely come back again for another visit. Can't think of a better place to stay!

Stayed in the Humidor House which was a fabulous private room overlooking the water- quiet, comfortable, and a great layout. The resort as a whole was such a great experience. The staff was great, I sat down and chatted with one in particular and she said the hospitality business can be tough to work in, but that she was so happy she was working here, because she was being treated right and with respect, which speaks volumes. The grounds were incredible from random pineapples growing to the lush beachfront lawn :) Everything was spot on, but what set Grassy Flats apart is the little things- reusable glasses, towels instead of paper towels, water bottle filling stations instead of plastic bottles, dinner served on banana fiber plates and bamboo forks (all of which got composted off site). They are doing things right because thats what they believe in. Grassy Flats is a great example of how things can be done in a more conscious way. Truly inspiring-- thanks for paving the way!!! Great people doing great things!

Attended a conference put on at Grassy Flats and it was just the best time. Every single member of the staff was super accommodating and friendly, our room was beautiful and spacious, and all of the rooms over look the ocean and pool! You can tell this place is run with passion for hospitality. We were right in the heart of Grassy Key and it was exactly where you need to be. Overall beautiful place to stay!

This is by far one of the nicest hotels Ive stayed in down in the keys. Its so nice and clean and the best part is the view! The employees are extremely kind as well! Refreshing pool and really close to downtown Marathon.

We were guests at Grassy Flats for a company dealer meeting for kiteboarding, windsurfing, stand-up paddleboard and foiling. The resort was perfect for everything we needed. We stayed at the Rhum House and the rooms were super spacious and clean with beautiful views. The porch was our main area for gathering as it looks over the ocean and is a cooler temperature despite it being 94 degrees outside. The staff was very friendly and accommodating. Anytime we needed anything someone was ready to help us out. Highly recommending this new addition to the Keys. If you are a water enthusiast it is the perfect location for all new toys to be tested out!

This resort is the best of both worlds. Affordable yet still has everything you could possibly need. The staff has went above and beyond. Don’t hesitate to book here if you’re coming to the Middle Keys!

I cannot say enough good things about this place. I came down with three friends for a week long getaway and was pleasantly surprised with Grassy Flats. The plan was to do some diving, fishing, water sports and relaxing. And we accomplished all in comfort and style! As we checked in we were greeted with warm smiles and immediately felt like family. We could tell right away this wasn’t your normal chain hotel. We were given the keys to our room and some local insight of the area. As I entered the room I was blown away. The room was immaculate, smelled amazing, and looked brand new. The decor was spot on for setting a relaxing mood while on holiday. The view from the balcony was breathtaking overlooking the pool and Atlantic Ocean. The kitchen was nicer than any I have ever seen in a hotel with granite countertops and soft close cabinets. I was ready to move in. The pool and tiki bar in this place became my favorite spot. I cannot begin to describe how gorgeous the bar is. The drinks were amazing, lounge chairs comfortable, and had ample shade from umbrellas. The pool has a very large super shallow chill area that leads to the deeper end. The staff gave us recommendations for fishing charters, restaurants, and other fun activities in the area. I loved the boating but my favorite was the Keys Cable Park which was just a few blocks down the road. I am now hooked on the cable park. The place was amazing fun for everyone. I saw kids as young as six and grown men over 50 all enjoying water sports in a unique setting. We even got to challenge each other to some axe throwing. A must try. I do recommend if you plan to fish call ahead and reserve your charter early. I would give Grassy Flats 6 stars if I could. My friends and I agree we have found our new go to spot for vacations.

58182 Overseas Hwy Marathon FL

Hotel highlights

  • Walking distance to Dolphin Research Center
  • Free WiFi in rooms and public areas
  • Free parking
  • Outdoor pool

Within a short walk of Dolphin Research Center, Grassy Flats Resort & Beach Club is within 2 miles (3 km) of Crawl Key. This 15-room hotel welcomes guests with conveniences like an outdoor pool, free in-room WiFi, and free self parking.


Guests can expect to find free WiFi and 43-inch a flat-screen TV with cable channels. Beds sport premium bedding and the bathroom offers a hair dryer and designer toiletries. Other standard amenities include a furnished balcony or patio, a living room, and a refrigerator.

Property features

Guests of Grassy Flats Resort & Beach Club enjoy features like an outdoor pool, free WiFi in public areas, and a terrace. Free parking is available if you drive. The 24-hour front desk has multilingual staff ready to help with concierge services, and answer any questions about the area. Additional amenities include a picnic area and a garden.

Room options

Grand Studio, Ocean View

King 2 | Sleeps 5

Deluxe Studio, 2 Queen Beds, Non Smoking, Ocean View

Queen 2 | Sleeps 4

Exclusive Suite, Ocean View

King 2 | Sleeps 12

Family Suite, Multiple Beds, Non Smoking, Ocean View

Full 2 | Sleeps 6

Reviews from Trip Advisor

Trip Advisor aggregated rating

% of guests recommend this hotel

Total of 16 reviews

Grassy Flats Resort & Beach Club

58182 Overseas Hwy, Marathon, FL 33050
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.