Isla Bella Beach Resort – Marathon Resort Review
Last updated: August 28, 2026
Choose Isla Bella Beach Resort if...
- You're a family wanting multi-bedroom residences with full kitchens and kid-friendly pools on a private beach
- You're a couple wanting luxury spa treatments and adults-only pool areas in a beachfront setting
- You're a boater or angler wanting a 20-slip marina with direct ocean access at your resort
Skip Isla Bella Beach Resort if...
- You're on a budget — rates reflect the luxury positioning and amenity package
- You want nightlife — Marathon has no strip comparable to Duval Street
- You want walkability — the resort is car-dependent for off-property dining
AskTheKeys Traveler Match
How well does Isla Bella Beach Resort fit your trip?
Before you book — the one trade-off
Isla Bella is Marathon's polished beachfront luxury option, and the rates show it — you get a private beach and five pools, but nothing walkable nearby.
AskTheKeys Decision SummaryIsla Bella Beach Resort is best for families, couples, and groups wanting a large-scale luxury beachfront resort with five pools, spa, marina, and multiple restaurants on 24 acres in Marathon. It is not ideal for budget travelers, nightlife seekers, or guests who want walkable downtown access.
Choose Isla Bella if you want Marathon's polished beachfront luxury with five pools and a spa. Skip it if you're on a budget or want walkable nightlife nearby.
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.
Before You Book
The details that matter after you've narrowed down your options.
Best for
- Families wanting multi-bedroom residences with full kitchens and kid-friendly pools on a private beach
- Couples seeking luxury spa treatments and adults-only pool areas in a beachfront setting
- Groups needing two-to-four-bedroom residences with resort-scale dining and entertainment
- Boaters and anglers who want a 20-slip marina with direct ocean access at their resort
Not ideal for
- Budget travelers — rates reflect the luxury positioning and extensive amenity package
- Nightlife seekers — Marathon has no nightlife strip comparable to Key West's Duval Street
- Walkability seekers — the resort is car-dependent for off-property dining and attractions
Quick facts
| Address | 1 Knights Key Boulevard, Marathon, FL 33050 |
|---|---|
| Phone | (305) 433-9000 |
| Check-in / Out | 4:00 PM / 11:00 AM |
| Parking | On-site (free) |
| Pets | Yes (fee may apply) |
| Beach access | Yes |
| Pool(s) | Yes |
| Spa | Yes (full-service) |
| EV charging | No |
Location & nearby
Isla Bella Beach Resort is located in Marathon within Marathon.
What's nearby
- Seven Mile Bridge(0.5 mi, 10 min walk)
- Sombrero Beach(3 mi, 60 min walk)
- Turtle Hospital(2.5 mi, 50 min walk)
- Crane Point Museum & Nature Center(2.8 mi, 56 min walk)
- Marathon Community Park(3.5 mi, 70 min walk)
- Bahia Honda State Park(12 mi, 240 min walk)
- Pigeon Key(2 mi, 40 min walk)
- Keys Fisheries Market & Marina(3.2 mi, 64 min walk)
Amenities overview
Property highlight features
- Five pools including adults-only and family options
- Private beach and 20-slip marina
- Full-service spa with treatment rooms
- Multiple on-site restaurants and on-site brewery
- Two-to-four-bedroom residences with full kitchens
Pricing positioning
Typical nightly pricing tends to fall in the $$$ range, depending on season and room type.
luxury beachfront destination resort
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 Isla Bella Beach Resort Compares to Other Marathon Resorts
Isla Bella Beach Resort vs Tranquility Bay Beachfront Resort
- Isla Bella Beach Resort wins:newer luxury resort with expansive 24-acre grounds, five pools, spa, marina, and multiple restaurants
- Tranquility Bay Beachfront Resort wins:established beach-house resort with full kitchens, private beach, and family-centric villa layout
Isla Bella Beach Resort vs Hawks Cay Resort
- Isla Bella Beach Resort wins:luxury Marathon resort with spa, multiple pools, and upscale dining on expansive waterfront grounds
- Hawks Cay Resort wins:destination island resort on Duck Key with dolphin programs, saltwater lagoon, and marina village
Isla Bella Beach Resort vs The Hammocks at Marathon
- Isla Bella Beach Resort wins:large-scale luxury resort with spa, multiple restaurants, and five pools on 24 waterfront acres
- The Hammocks at Marathon wins:mid-range Bluegreen vacation ownership resort with full-kitchen suites, tiki bar, and fishing charters at a lower price point
FAQs
Does Isla Bella Beach Resort have a private beach?
Yes. Isla Bella features a private beach along with marina access, five pools, and 24 acres of waterfront grounds on the Gulf of Mexico and Atlantic Ocean sides of Knights Key.
How many pools does Isla Bella Beach Resort have?
Isla Bella has five pools, including a family pool with a splash area, an adults-only infinity pool overlooking the water, a lagoon-style pool, and two additional pools positioned throughout the 24-acre property.
Does Isla Bella have a marina?
Yes. Isla Bella Beach Resort operates a 20-slip marina that accommodates boats up to 60 feet. Guests can arrange fishing charters, snorkeling trips, and sunset cruises directly from the resort's marina.
Is Isla Bella Beach Resort pet-friendly?
Yes. Isla Bella welcomes pets in designated rooms and residences for an additional fee. The resort's expansive 24-acre grounds provide ample outdoor space for walking pets.
What dining options are available at Isla Bella?
Isla Bella offers multiple on-site restaurants including The Mahogany (fine dining with waterfront views), a casual poolside grill, and Isla Bella Brewing — an on-site craft brewery. Room service is also available.
Does Isla Bella have a spa?
Yes. Isla Bella features a full-service spa offering massages, facials, body treatments, and wellness services in dedicated treatment rooms with ocean-view relaxation areas.
How far is Isla Bella from the Seven Mile Bridge?
Isla Bella Beach Resort is located at the foot of the Seven Mile Bridge, approximately 0.5 miles from the bridge's Marathon-side entrance. The resort sits at Mile Marker 47 on Knights Key.
Do you need a car at Isla Bella Beach Resort?
A car is recommended for exploring Marathon's restaurants, attractions, and neighboring keys, though many guests spend entire stays on the 24-acre property without needing to leave. Free on-site parking is provided.