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Relax at Our Luxury Florida Keys Resort

A Tropical Oasis in the Keys

A World Class Florida Keys Luxury Resort

Tranquility Bay Beach House Resort offers an idyllic blend of luxury accommodations in 2- and 3-bedroom Florida Keys beachfront rentals featuring resort amenities in a spectacular beach setting on the Gulf of Mexico. We additionally offer new single-level Tropical Garden Guestrooms with lovely tropical views. Easy to reach, Tranquility Bay Resort is located in Marathon Florida, the heart of the Florida Keys, less than one mile from Marathon Airport, and within easy driving distance of Miami (90 minutes) and historic Key West (45 minutes).

Luxurious Accommodations

Tranquility Bay Beach House Resort offers 87 luxury two and three bedroom Marathon Florida Vacation rental houses each boasting spectacular views of the Gulf of Mexico. Each Florida Keys vacation home features a fully equipped gourmet kitchen, two and a half bathrooms, laundry facilities, cable service, luxurious bed and bath linens, whimsical painted furniture, locally inspired artwork, wireless high-speed (WI-FI) Internet, daily maid service, and spacious porches with water views. If you're looking for smaller, more intimate accomodations, try a new Tropical Garden Guestroom. These single-level accommodations are comparable to a spacious hotel room with garden views.

Resort Features and Amenities

In addition to Tranquility Bay's secluded private beach, our Marathon Florida resort offers three lushly landscaped swimming pools and a putting green designed by Nicklaus Design where you can prepare for the golf course. Our onsite fitness room features cardio-vascular machines and weights.

3 Pools and a Private Beach

Tranquility Bay Resort offers our guests the choice of three swimming pools. The main lagoon-style pool is set in a tropical oasis, with a second pool known as the adult relaxation pool for adult-only use. The third swimming pool is located in our secluded Tropical Garden Guestroom area of Tranquility Bay. Please note that this pool is much smaller than the other two resort pools.

Guests also love our private white sand beach, which is spread over 2.5 acres. There is a small beach entry access area as well with a shallow swimming lagoon. Please note that at certain times of the year, a prevailing north wind can bring sea grass to our beach. While we work hard to clean the beach regularly, it is sometimes impossible to remove all of the sea grass due to wind direction. Local restrictions prevent us from permanently removing sea grass from the water and we are therefore required to place the grass into another location of the ocean. Learn more about sea grass protection, in the video below.

Watersports and Activities

Resort guests will be delighted with our onsite watersports operated by "Turtle Island." The experts at Turtle Island Watersports will be pleased to provide you with the best in fishing charters, diving, snorkeling, sailing, personal watercraft rental, parasailing and back country eco-tours. In addition, for the truly adventurous, other local activities include skydiving and flying in a fighter jet.

Fine Dining at Butterfly Café

The #1 rated Marathon Florida destination restaurant, Butterfly Café, features tropical world cuisine and is open daily for lunch and dinner. Enjoy fine dining on our porch or inside our elegant dining room. A special children's menu offers great variety and value. For lighter fare, tropical drinks and spectacular sunset views, visit TJ's Tiki Bar directly on the beach.

Note: Tranquility Bay Beach House Resort is a 100% non-smoking hotel. We request guests maintain our smoke free Resort policy. Smoking is not allowed in the beach houses, porches, Tiki Bar, restaurant, lawns, pathways, beach or pool areas.