Tamarind Springs
Day SpaKoh Samui, Surat Thani
A forest day spa on Koh Samui built around granite steam caves, waterfalls and plunge pools, open daily with walk-in or day-pass access.
$
Spas with steam room in Thailand
2 spas match
The Spa at Four Seasons Chiang Mai
Resort SpaChiang Mai, Northern Thailand
A hotel spa inside the Four Seasons Resort Chiang Mai in Mae Rim, with sauna, steam room, cold plunge and thermal pools set among rice paddies, open to resort
$$$$