Let's Relax Onsen & Spa Thonglor

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.

In accordance with the government's guidelines regarding COVID-19 prevention, Let's Relax Spa will implement advance reservation policy as followed.

- After purchase, customers must contact the receptionist by phone to make a reservation prior to the date stated in the voucher at least 1 day. Contact number will be given in your e-voucher.

- For spa treatments that take 30–60 minutes, last voucher redemption is strictly at 20:00.

- For spa treatments that take 90–120 minutes, last voucher redemption is strictly at 19:00.

- Operational hours: Every day, 10:00 – 21:00 (until further notice)