Small All-inclusive of the Year: Treasure Beach, Barbados Marriott has made a high-profile foray into the world of Caribbean all-inclusives, and the company’s offering is a diverse mix of larger resorts and delightful boutiques. That includes the marvelous Treasure Beach, an adults-only retreat perched on the sought-after sands of the Platinum Coast of Barbados, with equal parts modern luxury and quintessential Barbados glamour.