The views from the 37th-floor private spa suites at the Mandarin Oriental Hotel in Nihonbashi are unrivaled when it comes to a city spa. The menu is extensive, offering a wide range of treatments, including Japanese shiatsu, Thai massage, and Ayurveda. The facilities include an onsen-like infinity tub that overlooks the city for even more relaxation before or after your treatment, so be sure to add extra time to your schedule when booking an appointment.
