Mayfair, Bangkok is a Marriott Executive Apartments property, a long-stay serviced-apartment format aimed at families and relocating professionals rather than short-break tourists. Set on quiet Soi Langsuan in Pathum Wan, it sits within a 7-10 minute walk of Chit Lom BTS, Ratchadamri BTS and Lumphini Park, with Central Chidlom and CentralWorld shopping close by. The 162 units span one-, two- and three-bedroom apartments roughly 54-186 sqm, each with a fully equipped kitchen, washer/dryer, work desk and separate living and dining areas. A 25th-floor saltwater rooftop pool with a pool bar, a 24-hour fitness centre, spa, kids' area and the Bistro M restaurant round out the amenities. Independent reviews and TripAdvisor feedback (rated around 4.5/5 and consistently ranking among Bangkok's better-reviewed stays) repeatedly praise spacious, well-serviced apartments, warm and attentive front-desk staff, and strong value for extended stays. Common watchouts are dated decor in some units, uninspiring city-office views from lower floors, and the loyalty caveat that Executive Apartments earn reduced Marriott Bonvoy points and night credits versus standard hotels. Overall it reads as a reliable, homely base for anyone spending a week or more in central Bangkok.