Ritz-Carlton Key Biscayne

The Ritz-Carlton Key Biscayne reopened on 8 December 2025 after a USD 100 million rebuild, the first full renewal in nearly 25 years. It has 421 rooms on a 17 acre island site with more than 600 feet of beach, six dining venues and a 30,000 square foot spa. No MICHELIN star or Key.

"Reopened in December 2025 after a 100 million dollar rebuild, with six dining venues, six hundred feet of beach and a 30,000 square foot spa."

Aggregate 9.2/10 on our editorial scale (Room & Design, Service, Location). Independently scored; see our methodology. This is our opinion, not an aggregate of user reviews.

Affiliate disclosure: we may earn a commission from bookings at no cost to you. We never accept payment for placement. Hotel status, room product and Michelin ratings were verified against official sources and the 2026 Michelin Guide Florida in July 2026. Resort fees and valet charges were checked separately and move frequently.

What makes Ritz-Carlton Key Biscayne special?

Treat this as a new hotel, not an old one. The Ritz-Carlton Key Biscayne reopened on 8 December 2025 after a USD 100 million renovation, the first comprehensive renewal of the resort in nearly 25 years, and the rebuild changed the architecture rather than the furniture: new open air spaces and a sweeping glass facade facing the Atlantic. The changes reach the dining line up too. Lightkeepers is gone; Luma has taken its place. The site is the other half of the argument. This is 17 acres on Key Biscayne, a barrier island reached by the Rickenbacker Causeway, with more than 600 feet of private beach frontage and 421 rooms and suites in a 13 storey building. The spa runs to 30,000 square feet with 16 treatment rooms, and the Cliff Drysdale Tennis Center now offers tennis, pickleball and padel alongside an expanded water sports programme. Set expectations on awards honestly: the resort holds no MICHELIN star, no MICHELIN Key and no Forbes Five Star for 2026. It competes on scale, on a freshly rebuilt product and on an island position that no Miami Beach hotel can match.

Which room should you book?

421 rooms and suites sit in a 13 storey building that came through a comprehensive renovation completed in December 2025. That is the single most useful fact when comparing this resort with its older Miami competitors: the product is new, the architecture is new, and the open air public spaces and the glass facade came out of the same USD 100 million programme. Views split between the Atlantic and the island, and on a 17 acre site with more than 600 feet of beach frontage, the difference between an ocean facing room and an inland one is worth paying for here in a way it is not at a smaller property. We do not publish square footage or category by category detail we cannot verify against the brand's current floor plans. Check the Ritz-Carlton property page for the current category list, and ask two questions when you book: which side the room faces, and how close it sits to the Grand Bay Club at 425 Grand Bay Drive, where a renovation was scheduled to begin in 2026.

Where should you eat and drink?

Six dining and cocktail venues opened with the December 2025 renovation, and none of them holds a MICHELIN star. Luma is the flagship, Mediterranean inspired Italian with an ocean view, and it replaced Lightkeepers in the rebuild, so ignore any guide still listing the old name. Paralía is the open air beachfront option, Greek and Turkish cooking built on locally sourced seafood. The Rum Bar works as the lobby lounge. Dune Beach Bar covers the sand. Stefano's is the poolside pizzeria and Scoop is a gelato counter, and that pair matters more than it sounds on an island where leaving the resort for a casual lunch means crossing the Rickenbacker Causeway both ways. That spread of price points is a strong practical argument for this resort over its Miami Beach rivals. The Ritz-Carlton Key Biscayne holds no MICHELIN Key either; Keys are hotel awards and this property is not on the Miami list.

What is the spa and pool like?

The spa is the headline: 30,000 square feet, 16 treatment rooms, couples' suites, a full service salon and a sensory spa garden, delivered in the USD 100 million rebuild. That makes it one of the largest hotel spas in the Miami area and the clearest reason to choose this resort over a smaller beach hotel. Outdoors, the pools were refreshed and new cabanas added in the same programme; the resort does not publish a headline pool count since the renovation, so we do not state one. The Cliff Drysdale Tennis Center now runs tennis, pickleball and padel, and the water sports programme has been expanded. On a 17 acre site with more than 600 feet of beach, there is enough here to fill a week without crossing the causeway, which is the practical case for this resort.

Where is Ritz-Carlton Key Biscayne, and how do you get there?

Key Biscayne is an island, and that cuts both ways. The resort sits at 455 Grand Bay Drive on a barrier island reached only by the Rickenbacker Causeway, south east of Downtown Miami, directly on the sand with more than 600 feet of private beach frontage on a 17 acre site. The upside is a beach and an atmosphere that Collins Avenue cannot offer: no through traffic, no strip, no nightclub next door. The downside is that everything except the beach is a drive. Ocean Drive and Lincoln Road are roughly 25 to 40 minutes away, Wynwood roughly 25 to 35 minutes, and Miami International Airport roughly 30 to 40 minutes, about 14 miles. Every one of those routes crosses the Rickenbacker Causeway, which is the bottleneck and backs up badly at peak times. Plan on either committing to the resort for the week or budgeting real time for each trip off the island. Guests who assume Key Biscayne is a short hop to South Beach are the ones who leave frustrated.

What do guests consistently say?

Read reviews of this resort with the date in mind. It reopened on 8 December 2025, so anything written before that describes a hotel that no longer exists, including every mention of Lightkeepers. The feedback themes that carry across the reopening are structural rather than cosmetic, and they are worth planning around. Key Biscayne is isolated, and guests who wanted to combine a beach week with Miami nightlife consistently report the causeway drive as the frustration of the trip. The resort is large and family heavy, so the main pool and beach are busy and loud during school holidays, and guests looking for a quiet adult stay should ask about quieter areas of the property when booking. The daily resort charge plus valet parking draws the same complaint here as everywhere else in Miami. On the positive side, the scale of the new spa, the range of the six dining venues and the tennis, pickleball and padel programme give the resort more to do than most Miami beach hotels.

Honest cons: who should skip it?

Three live risks, and one of them is time sensitive. First, construction. A separate renovation of the adjacent Grand Bay Club at 425 Grand Bay Drive was scheduled to begin in 2026, so ask the resort directly about on site works before you commit to specific dates, and ask which rooms face the site. Second, isolation. Everything except the beach requires a drive back over the Rickenbacker Causeway, which backs up badly at peak times, and that drive applies to every restaurant, gallery and neighbourhood outside the resort. Third, the bill and the crowds. Marriott bills a daily resort charge and valet parking here and neither figure is published, so check both live at booking; resort fees are near universal across Miami and valet frequently costs more than the fee itself, with Florida and county taxes on top. The resort is also very large and family heavy, so the main pool and the beach are busy and loud in school holidays. None of this is hidden, and all of it is checkable before you book.