Bellini Aventura
On an island where every residence is a corner unit, Bellini Aventura stands apart by simply having fewer of them: just 70 homes across 24 stories on the last remaining residential lot of Williams Island. Developed by Martin Z. Margulies and designed by Cohen, Freeman & Encinosa, the elliptical tower at 4100 Island Boulevard gives every residence its own private elevator foyer, wraparound glass balconies, and 90-degree panoramic water views. Floor plans run 2,300 to 4,980 square feet (three and four bedrooms with 10-foot ceilings, 12 feet in the penthouses), and residents plug into the full Williams Island...
Bellini Aventura
On an island where every residence is a corner unit, Bellini Aventura stands apart by simply having fewer of them: just 70 homes across 24 stories on the last remaining residential lot of Williams Island. Developed by Martin Z. Margulies and designed by Cohen, Freeman & Encinosa, the elliptical tower at 4100 Island Boulevard gives every residence its own private elevator foyer, wraparound glass balconies, and 90-degree panoramic water views. Floor plans run 2,300 to 4,980 square feet (three and four bedrooms with 10-foot ceilings, 12 feet in the penthouses), and residents plug into the full Williams Island Club lifestyle: 27,000 square feet of spa and fitness, a 16-court tennis center, and a 106-slip marina.
Key Facts
- Building: Bellini Aventura, 24-story boutique tower on Williams Island
- Address: 4100 Island Blvd, Aventura, FL 33160 (Williams Island)
- Neighborhood: Williams Island, Aventura
- Developer: Martin Z. Margulies
- Architect: Cohen, Freeman & Encinosa
- Stories: 24
- Units: 70 residences (3 to 4 bedrooms, 2,300 to 4,980 sq. ft.)
- Year completed: 2013
The Last Lot on Williams Island
That detail matters for value. Williams Island is essentially built out, which means no future tower can dilute Bellini Aventura's views or its claim on the island's club. The 24-story building's elliptical shape was drawn specifically so every residence captures bay, marina, and ocean sightlines. Inside the building, amenities stay intimate: fitness center with men's and women's locker rooms and saunas, media room, kids' game room and lounge, and a landscaped sundeck with resort-style pool and spa overlooking the marina.
Buying or Renting on the Island
Resales at Bellini Aventura skew toward move-in-ready three-bedrooms in the $1.9M to $2.9M range, with penthouses reaching toward $6M, strong numbers supported by genuinely limited supply. Rental listings appear less often but command premium rates for the island lifestyle. Compare with neighboring island towers like Bella Mare Williams Island and Williams Island 7000, and see the broader Aventura market for context.
The island club covers daily life, but Aventura's real restaurant depth sits ten minutes north at Aventura Mall. For a proper splurge night, Bourbon Steak ($$$$) at the JW Marriott Turnberry does the special-occasion thing properly, while CVI.CHE 105 ($$) is the weeknight workhorse. Groceries come from Whole Foods Aventura or Publix, and for a change of pace, Gulfstream Park in Hallandale pairs dinner with racing and the casino, about fifteen minutes up the coast.
Compare island life with One Island Place and Prive Island before deciding where the view is worth it.
Bellini Aventura Frequently Asked Questions
❯ What makes the floor plans different from other Williams Island towers?
Scarcity and geometry. With only four residences per floor on an elliptical footprint, every home is a corner unit with a private elevator entry and wraparound balconies accessible from every room: a layout most neighboring towers can't match.
❯ What does Williams Island Club membership include?
Residents get access to the island's 27,000-square-foot fitness center and spa, 16-court tennis complex with pros, restaurants and café, indoor and outdoor pools, and the 106-slip private marina (dock rentals available). It is one of South Florida's most complete private club amenity packages.
❯ Are units available to rent, or only for sale?
Both. Bellini Aventura trades actively on the resale market, typically 3 and 4-bedroom units from roughly $1.9M, and owners do list homes for lease, so renters can access the building and its island amenities too.
❯ Who developed and designed the building?
Developer Martin Z. Margulies, a longtime South Florida luxury builder, with architecture by Cohen, Freeman & Encinosa. Bellini Aventura was completed around 2013 on the final residential parcel available on Williams Island.
❯ What are the interior finishes?
Poggenpohl kitchen and bath cabinetry, Sub-Zero and Miele appliances, Uline wine coolers, granite counters, and floor-to-ceiling hurricane-rated glass. Ten-foot ceilings are standard; penthouses get 12 feet.
❯ How secure and serviced is the building?
Very. A 24/7 front desk, concierge, valet parking, computerized access control with closed-circuit monitoring, and private elevators with a separate service elevator give the tower a full white-glove operation.
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