Guests of Marriott Sanibel Harbour Resort & Spa have access to a full-service spa, 3 outdoor pools, and an indoor pool. Parking is available for USD 15 per day (USD 25 per day for valet parking), and there's also limo/town car service. Multilingual staff at the 24-hour front desk can assist with access to locker space, luggage storage, and tours or tickets. Other amenities at this spa resort include a 24-hour gym, a sauna, and outdoor tennis courts.