KKday User
I had an absolutely wonderful experience! There were around five themed onsens, saunas, shower and rest area. Towels, clothes and key lockers were provided free of charge. There were foot massagers, sun bath and whole body massagers with coin machines. There were also facial and body treatments on site that can be provided with additional charges.
The design of the onsens were stunning, each onsen comes with spas in different temperatures and curative effects (different carbonic acid). All the facilities were clean and maintained well.
I went in on a weekday evening, there weren't many people at the time, so sometimes I'd have the whole spa by myself. If I live nearby, I'd probably go there every week! If I were to come back to Osaka, I'd get the tickets for the other facilities as well and spend my whole day there. Highly recommend it!