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Relax at Our Florida Keys Resort

You could get used to this...

There’s a reason our resort is named Tranquility Bay. From our private white sand beach to our three luxurious swimming pools, peace and serenity is assured. We take inspiration from our neighbors in the Caribbean, with an abundance of tropical palm trees lining our turquoise waters, creating a paradise that’s worlds away from your everyday life.

So sit back, relax, perhaps enjoy a cocktail, and make memories that will last a lifetime.

Quick facts

At a glance

  • 2.5-acre private beach
  • 3 sparkling pools, including one lagoon-style pool and one adult relaxation pool
  • An idyllic blend of luxury accommodations, with exclusive beach houses and tropical guestrooms
  • Award-winning dining at our Butterfly Café, the top-rated restaurant in Marathon – taste our fresh seafood dishes and TDF ‘To Die For’ Sticky Toffee Pudding
  • Cocktails, smoothies, and snacks at our beachside Tiki Bar
  • Onsite watersports, including diving, snorkeling, and sailing
  • Private, in-room spa treatments upon request (pre-booking required)
  • Fitness studio
  • Putting green by Nicklaus Design
  • Laundry facilities
  • Please note that pets are not permitted at Tranquility Bay Resort
  • We are a smoke-free resort
  • View our quick facts for more information, including cancellation policies
  • Learn more about the importance of seagrass at Tranquility Bay Resort

Delve into our resort map and begin dreaming of your escape. 


Imagine waking up to spectacular views of the Gulf of Mexico. Here, that’s a reality. We offer 87 luxury beach houses and Tropical Garden Guestrooms for the luxury vacation of your dreams.

Discover our rooms


Thrill-seekers and outdoors types will find a haven at Tranquility Bay, with a vast range of watersports available onsite. We’ve exclusively partnered with our friends at Turtle Island Watersports to provide our guests with the best fishing charters and backcountry eco tours, plus diving, snorkeling, sailing, and watercraft rental.

Dive into adventure

Where you want to be

The Florida Keys

Over 100 miles of sparkling turquoise waters, powder soft sands, and total tranquility; that's what you will discover in the Florida Keys. Relax in our temperate, tropical climate year-round, with average temperatures ranging from 70 degrees in January to 84 degrees in August.

When you aren't relaxing in laidback luxury at Tranquility Bay, discover the best of Marathon and beyond...

Marathon Key

Explore Marathon's historic charm and modern attractions, just moments away from Tranquility Bay.

Turtle Hospital

Located just next door. Get a behind-the-scenes look at the rehabilitation of sick and injured turtles.

Dolphin Research Center

Fun for the whole family. Enjoy an in-water encounter with your favorite marine mammals.

Bahia Honda State Park

Home to one of the world’s top beaches, as well as rare and unusual plants and wildlife.

Crane Point

A 64-acre protected park, with museums, a bird center, and an extensive nature trail system.

Pigeon Key

Step back in time at Pigeon Key, listed on the National Register of Historic Places.

Florida Keys Aquarium Encounters

View the tanks and exhibits, snorkel with over 2,000 tropical fish, and even feed the sharks!

Seven Mile Bridge

Located at the southern end of Marathon, the Keys’ longest bridge measures nearly 36,000 ft.

Sombrero Reef

The only living coral reef in the continental US. Dive in—literally—or go snorkeling.

Sombrero Beach

12.6 acres of white sands, walkways, picnic areas, and a roped-off swimming area.

Coco Plum Beach

A small, natural beach that is popular with locals and their dogs.

Getting here

Discover total tranquility just 90 miles south of Miami and 45 miles north of historic Key West.

Driving directions

  • From Miami International Airport
    Take 836 West to Florida Turnpike South (tolls) to US1, Overseas Highway, to Marathon. Tranquility Bay Beach House Resort will be on your right (Bayside) at Mile Marker 48.5.

  • From Key West
    Travel 45 miles North on US1, Overseas Highway, to Mile Marker 48.5. Tranquility Bay Beach House Resort will be on your left (Bayside).

  • From Marathon Airport
    Turn right out of the airport, and travel South on US1, Overseas Highway. Tranquility Bay Beach House Resort will be approx. one mile on your right (Bayside) at Mile Marker 48.5.

Airport Shuttle

Not renting a car? Take advantage of the Marathon, Florida Airport shuttle for an easy way to reach paradise.

View airport shuttle information.

Address and contact information

2600 Overseas Highway

Mile Marker 48.5

Marathon, FL 33050

Hotel reception: 305-289-0888

Reservations: (888) 755-7486

Fax: 305-289-0667