Tranquility Bay Beachfront Resort – Marathon Resort Review
Last updated: August 28, 2026
Choose Tranquility Bay Beachfront Resort if...
- You're a family wanting multi-bedroom beach houses with full kitchens on a private Gulf beach
- You're a group wanting self-catering flexibility with resort-managed amenities and dining
- You want one of the few true private sand beaches in Marathon
Skip Tranquility Bay Beachfront Resort if...
- You're a solo traveler — the beach-house format is built for families and groups
- You're on a budget — multi-bedroom beach houses carry premium rates in peak season
- You want nightlife — Marathon has no corridor comparable to Key West
AskTheKeys Traveler Match
How well does Tranquility Bay Beachfront Resort fit your trip?
Before you book — the one trade-off
Tranquility Bay is built around spacious beach houses and a real sand beach — great for families, but there's no marina and it's priced for multi-bedroom space.
AskTheKeys Decision SummaryTranquility Bay Beachfront Resort is best for families and groups wanting spacious multi-bedroom beach houses with full kitchens and private beach access in the Middle Keys. It is not ideal for solo travelers seeking nightlife, budget travelers, or guests who want walkable downtown access.
Choose Tranquility Bay if you want spacious multi-bedroom beach houses on a real private sand beach. Skip it if you're solo, on a budget, or want nightlife.
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Before You Book
The details that matter after you've narrowed down your options.
Best for
- Families wanting multi-bedroom beach houses with full kitchens on a private Gulf beach
- Groups seeking self-catering flexibility combined with resort-managed amenities and dining
- Beach seekers who prioritize a private sand beach — one of the few true sand beaches in Marathon
- Extended-stay travelers who value in-unit kitchens, laundry, and spacious living areas
Not ideal for
- Solo travelers — the beach-house format is designed for families and groups, not single guests
- Budget travelers — multi-bedroom beach houses carry premium rates especially in peak season
- Nightlife seekers — Marathon has no nightlife corridor comparable to Key West
Quick facts
| Address | 2600 Overseas Highway, Marathon, FL 33050 |
|---|---|
| Phone | (305) 289-0888 |
| Check-in / Out | 4:00 PM / 11:00 AM |
| Parking | On-site (free) |
| Pets | No |
| Beach access | Yes |
| Pool(s) | Yes |
| Spa | Yes (limited) |
| EV charging | No |
Location & nearby
Tranquility Bay Beachfront Resort is located in Marathon within Marathon.
What's nearby
- Sombrero Beach(1.5 mi, 30 min walk)
- Turtle Hospital(2 mi, 40 min walk)
- Seven Mile Bridge(3 mi, 60 min walk)
- Crane Point Museum & Nature Center(1.8 mi, 36 min walk)
- Marathon Community Park(2.2 mi, 44 min walk)
- Keys Fisheries Market & Marina(1.5 mi, 30 min walk)
- Pigeon Key(4 mi, 80 min walk)
- Bahia Honda State Park(14 mi, 280 min walk)
Amenities overview
Property highlight features
- Private sand beach on the Gulf of Mexico
- Two- and three-bedroom beach houses with full kitchens
- Three pools and hot tub
- Butterfly Café restaurant and tiki bar
- Organized family activities and watersports rentals
Pricing positioning
Typical nightly pricing tends to fall in the $$$ range, depending on season and room type.
upscale beachfront family resort with villa-style units
Compare current room availability and secure member-only pricing.
We handle our lodging checks through Expedia's network engine so you can lock in hidden seasonal discounts and stack your One Key™ rewards points across different island brands.
Independent Decision Engine
Florida Keys Resorts operates as a fully objective, crowdsourced review system. We do not accept paid placements from hotels to alter their scoring records. Instead, we use standardized API connections to provide transparent third-party rate checks for our community.
How Tranquility Bay Beachfront Resort Compares to Other Marathon Resorts
Tranquility Bay Beachfront Resort vs Isla Bella Beach Resort
- Tranquility Bay Beachfront Resort wins:established beachfront resort with spacious multi-bedroom beach houses, full kitchens, and private Gulf beach
- Isla Bella Beach Resort wins:newer luxury resort with expansive 24-acre grounds, five pools, spa, and multiple upscale restaurants
Tranquility Bay Beachfront Resort vs Hawks Cay Resort
- Tranquility Bay Beachfront Resort wins:beachfront beach-house resort with full kitchens and private sand beach in Marathon proper
- Hawks Cay Resort wins:destination island resort on Duck Key with dolphin programs, marina village, and broader activity range
Tranquility Bay Beachfront Resort vs Faro Blanco Resort & Yacht Club
- Tranquility Bay Beachfront Resort wins:private-beach family resort with multi-bedroom beach houses, full kitchens, and resort pools
- Faro Blanco Resort & Yacht Club wins:marina-focused resort with yacht club identity, waterfront dining, and boating access
FAQs
Does Tranquility Bay have a private beach?
Yes. Tranquility Bay features a private sand beach on the Gulf of Mexico, one of the few true sand beaches in the Marathon area. Beach loungers, umbrellas, and hammocks are provided for guests.
What types of units does Tranquility Bay offer?
Tranquility Bay offers two-bedroom and three-bedroom beach houses, each with full kitchens, separate living and dining areas, washer/dryer, and private balconies or patios. Units range from approximately 1,100 to 1,600 square feet.
Is Tranquility Bay family-friendly?
Yes. Tranquility Bay is widely regarded as one of the most family-friendly resorts in the Florida Keys. The beach-house format with full kitchens, multiple pools, organized activities, and the private beach make it especially popular with families with children.
Does Tranquility Bay have a restaurant?
Yes. Butterfly Café is Tranquility Bay's on-site restaurant, serving breakfast, lunch, and dinner with Gulf views. A poolside tiki bar serves cocktails and casual fare. Each beach house also has a full kitchen for self-catering.
Is Tranquility Bay pet-friendly?
No. Tranquility Bay does not allow pets on the property. Guests requiring pet-friendly accommodations in Marathon should consider Isla Bella Beach Resort or Faro Blanco Resort, both of which welcome pets.
How many pools does Tranquility Bay have?
Tranquility Bay has three heated pools and a hot tub. The pools are distributed across the property to reduce crowding, with the main pool adjacent to the Butterfly Café and tiki bar.
How far is Tranquility Bay from the Turtle Hospital?
The Turtle Hospital is approximately 2 miles from Tranquility Bay, about a 6-minute drive. It is one of Marathon's most popular family attractions and offers guided educational tours of its sea turtle rehabilitation facility.
Do you need a car at Tranquility Bay?
Yes. Marathon is not walkable like Key West. A car is recommended for reaching restaurants, attractions, and other keys. Free on-site parking is provided for all guests, with space available at each beach house.