In July 2023, a gay-only hot spring facility and cruise club opened in Saphan Khwai.

The name KAIKAN comes from the Japanese word for "hall." There are multiple open-air baths such as jacuzzi and milk bath, dry sauna, steam sauna, a dark-maze, and a Japanese restaurant. The Japanese-style interior is simply gorgeous. It is open until 8:00 the next morning, so you can stay over.