Opened in 2019 on Knights Key, this purpose-built 199-room resort on 24 oceanfront acres at the entrance to the Seven Mile Bridge is the largest single luxury resort built in the Florida Keys in a generation.
"The Keys' newest purpose-built grand resort — 24 oceanfront acres at the foot of the Seven Mile Bridge, with the longest private beach in the Middle Keys."
Isla Bella Beach Resort & Spa opened in May 2019 on Knights Key at Mile Marker 47, occupying 24 oceanfront acres at the northern foot of the iconic Seven Mile Bridge. The site — a former marina trailer park acquired and developed by Pritam Singh's Singh Resorts — is the largest single luxury hospitality development in the Florida Keys this century, and the only Keys resort with uninterrupted views directly along the Seven Mile Bridge corridor. The property was designed by architecture firm SB Architects with interiors by ForrestPerkins, working a contemporary tropical palette of bleached oak, dune-grass linens, and ocean-blue accents that deliberately step away from the Keys' default Bahamian-pastel vocabulary.
All 199 rooms are oceanfront, occupying low-rise buildings spread across the 24 acres rather than concentrated in a single tower — the resort's most consequential design decision, and the one that distinguishes it from the older Marathon competition. Each room offers floor-to-ceiling glass doors opening onto a private terrace or beachfront walkout, with King and Double Queen configurations and a small inventory of two-bedroom suites for families. The standout categories are the Beachfront King Walkout — direct sand access from the terrace — and the Penthouse Suites on the top corner of the West Building, with the property's best Seven Mile Bridge sunset positions.
Five restaurants and bars operate property-wide. Olive & Sea is the flagship dinner room, a Mediterranean-Keys menu by chef Brett Hellinger with strong steak and seafood programs; The Hidden Light Tiki Bar is the beachfront sunset venue; Acqua Vita serves Italian poolside; Mahina Cabana serves coffee, ice cream, and quick lunches; and a sushi pop-up runs in season. The spa — a full-service operation with five treatment rooms — is the largest in the Middle Keys. Five pools (including an adults-only Tranquility Pool), a fitness center, a Pickleball court, and a complimentary watersports program (kayaks, paddleboards) cover the recreation programming.
Isla Bella's structural advantage is its scale combined with its newness: the property delivers a credible 199-room oceanfront resort experience without the architectural compromises that the Keys' historic properties carry. The 24-acre footprint and the four-building layout means the property never feels at capacity even when fully booked. Marathon's Faro Blanco marina is five minutes north, Sombrero Beach is ten minutes south, and the resort is the natural staging base for Lower Keys day trips toward Bahia Honda State Park. For families and for couples seeking contemporary five-star bones at the foot of the most photographed bridge in America, Isla Bella is the structurally correct booking.
Isla Bella's four-building layout, five pools (including a dedicated kids' pool with poolside Mahina Cabana service), 24-acre footprint, and two-bedroom suite inventory make it the strongest contemporary family-resort booking in the Middle Keys. The complimentary kayak and paddleboard program gives older children a credible day's activity; the resort's location at the foot of the Seven Mile Bridge offers the easiest possible logistics for Bahia Honda State Park and Pigeon Key day trips.
For honeymoons Isla Bella's adults-only Tranquility Pool and the Penthouse Suite category in the West Building deliver the property's quietest configuration. The Beachfront King Walkout rooms are the standard honeymoon booking — direct sand access, oversized terraces, and the property's best sunset orientation directly along the Seven Mile Bridge corridor. Olive & Sea is the celebration dinner room.
Anniversary stays at Isla Bella work because the resort's contemporary palette and 2019 construction date give the property the only crisp, modern, no-compromise five-star envelope in the Middle Keys. The Penthouse Suite category and the spa's couples treatment rooms are the standard milestone-anniversary booking; the resort's relative newness means signature menus, soft furnishings, and bathroom standards still feel fresh.
1 Knights Key Boulevard, MM 47
Marathon, FL 33050
United States
Mile Marker reference: Knights Key, Marathon; Miami International Airport approximately 1–2 hours by car
199 oceanfront rooms and suites
From $337/night
WiFi: complimentary, high-speed throughout
5-Star
Check-in: 4:00 PM
Check-out: 11:00 AM
Opened May 2019; Singh Resorts ownership; SB Architects design
Olive & Sea restaurant · The Hidden Light Tiki Bar · Five pools · Full-service spa · Pickleball & tennis · Kayaks & paddleboards included · 24 oceanfront acres · Seven Mile Bridge sunset views
From $337/night plus resort fee. Beachfront Walkout rooms and the Penthouse Suite book 3–4 months ahead for winter weekends; holiday weeks (Christmas, New Year's, Easter) book 6–9 months out.
Book This Hotel →The Keys property that single-handedly invented the modern barefoot-luxury cottage category
The only entire-island resort in the Middle Keys
The Queen of the Florida Keys, opened 1946