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Last Minute Luxury: Up to 20% Off
Last Minute Luxury

Save up to 20% on Sundays through Thursdays! Learn More

Up to $250 for Dining
SALE: Up to $250 for Dining

Enjoy a $50/night dining credit, select dates and room types. Learn More

Family Spring Break Escapes
Family Spring Break Escapes

Discover our family resort in the Florida Keys for spring break! Learn More

Stay 5 Nights and Save More
Stay 5 Nights and Save More!

Stay longer and save at Tranquility Bay! Call 877-741-7839. Book Now

View Our Online Planning Guide
Online Planning Guide

See which month is best for your visit! Call 855-417-5782 Browse Now

Tranquility Bay Resort Video

Welcome to Tranquility Bay Beach House Resort located in Marathon Florida, the heart of the Florida Keys. Here you will find more than unrivaled peace and seclusion on your Florida Keys resort vacation, while overlooking the sparkling waters of the Gulf of Mexico. Sink into serenity with one of our unique two or three bedroom beach houses. Now you can also discover the addition of 16 new luxury single-level "Tropical Garden Guestrooms" which offer more intimate accommodations than the resort's larger beach houses. Enjoy all of the amenities of Tranquility Bay Resort with more affordable luxury in mind, and tropical garden views. ext, try award winning dining at Butterfly Cafe, a 2.5 acre white sand beach, world class fishing, diving, snorkeling and water sports, three tropical swimming pools, and our beachfront TJ's Tiki Bar, all framed by 12 acres of picturesque gardens.