The Marriott Executive Apartments in both Mayfair (Lumphini) and Sukhumvit Park (Khlong Toei) have a 24-hour fitness centre where you can get your heart rate up, and a spa to rejuvenate body and mind. Sukhumvit Park has squash, badminton and tennis courts, while Mayfair boasts an indoor rooftop saltwater pool. The on-site restaurants and delis in these buildings serve healthy dishes, and you’re welcome to make your own meals in your apartment’s fully equipped kitchen.