This Ultra-Luxury Brand Just Spent $250 Million on a Beach North of Cancun

This Ultra-Luxury Brand Just Spent $250 Million on a Beach North of Cancun

One of Marriott's most prestigious names opened its second resort in the Mexican Caribbean this month, skipping the all-inclusive model entirely.

By Resort Flock Staff·Jul 13, 2026·Updated Jul 13, 2026

The stretch of coast just north of Cancun has a new ultra-luxury anchor. The St. Regis Costa Mujeres Resort opened this month in Costa Mujeres, Mexico, the product of a roughly $250 million investment and the brand's second address in the region.

The beachfront property holds 163 guestrooms and suites — including the top-tier Caroline Astor and Presidential suites — alongside 86 branded residences. Guests get the signature St. Regis butler service, nine dining venues, a St. Regis Spa, and more than 12,000 square feet of indoor and outdoor event space aimed at weddings and incentive groups.

Costa Mujeres, on the mainland across from Isla Mujeres, has quietly become one of the Mexican Caribbean's fastest-growing luxury enclaves. It already hosts a cluster of high-end resorts, among them Catalonia Grand Costa Mujeres, and the St. Regis arrival cements the area's move upmarket from the all-inclusive strips closer to Cancun's hotel zone.

For Marriott, the opening deepens a luxury push across the Caribbean and Latin America, where the St. Regis name has become a favored flag for beachfront trophy properties. Unlike much of the surrounding competition, the resort is not all-inclusive — a deliberate choice that leans on a la carte dining and personalized service to stand apart in a market saturated with unlimited-everything packages.