Experience Japanese-style hot spring right in the heart of Bangkok at Let's Relax Onsen & Spa Thonglor. Don yourself in a birthday suit and ease into 5 different onsen baths, as much and long as you wish.

Try Cold Bath (18 °C), Whirlpool Bath (36 °C), Soda Bath (38 °C), Silk Bath (40 °C) or the bathhouse's highlight Gero Hot Springs Bath (42 °C) filled with onsen concentrate from Gero and Takayama in Japan offering both beauty and remedial properties.

To maximize your soothing session, try the Himalayan-salt-walled Hot Stonebed Room or glass-walled Steam and Sauna. Then round off with even more relaxation in the Cool-Down Room before returning home full of happiness.