Hot spring facility located in the Big Fun Heiwajima complex. It features multiple baths (including Tokyo’s typical black water), saunas, a lounge area with reclining chairs, massage services, and a restaurant. Open 24 hours with timed packages.

Price: ≈ 2,000 ¥ (5-hour daytime package)
Touristy? : Moderately touristy, visited by locals, transit travelers, and regulars