The Ritz-Carlton, Koh Samui is a large luxury resort set on a 58-acre former coconut plantation on a private bay at the island's northern tip in Bophut. Its roughly 175 accommodations run from spacious 93-plus-square-metre suites to private-pool villas, most terraced up a hillside with garden or Gulf of Thailand views. Independent reviewers consistently praise the setting, the generous size and design of the rooms, and warm, attentive individual staff, along with signature southern Thai dining at Pak Tai and multiple restaurants including Sea Breeze Grill and the hilltop View Dining. Spa Village Koh Samui, Muay Thai classes and extensive grounds add resort depth. Reviews are more divided on execution: several note maintenance lapses for a property of its age, coarse-sand and uneven beach conditions, pool crowding at peak times, and dining and overall pricing that some feel outpaces the experience, with the nearby Conrad often cited as strong competition. Service quality reads as inconsistent across reviewers rather than uniformly excellent. Marriott elite members with Platinum-and-above status report complimentary breakfast and a nightly hospitality hour. Overall it is a scenic, well-appointed flagship that rewards those who value space, views and villa privacy, provided expectations account for its beach and value trade-offs.