After a major revamp, this spa is bigger and better than ever. The traditional decor belies treatments which utilize the most modern onsen and hydrotherapy technologies, while of course classic Thai massage is also on offer. Packages last anything from 1-4 hours—try the 40-minute Splashy Hydropool Massage, which sees your whole body massaged by warm jets of water from eight-station shower heads in a big indoor swimming pool.