SO/ SPA at SO/ Bangkok is a hotel spa in Sathon, Bangkok. Its signature service is a 90-minute aromatherapy treatment, and the pressure is adjusted to the strength you request. The Anodarth room on the 11th floor looks out over Lumphini Park, and tea and mango sticky rice are served after the massage. The 90-minute aromatic massage is available Monday through Friday, excluding public holidays.