Came here 1 April 2023 because hokuoukan closed down (31/4/23). I imagine this place will continue to be busy now that it's main competitor is closed. It's layout is similar to hokuoukan but smaller scale. Pretty much all locals when I was there... Easily 50 guys there late into the night

First - there's an age restriction, no one over 50 (or looks around 50)is admitted. The place is pretty quiet, steam room closed at night. It's about $25 to get in but you can grab a beer from a machine. Clean - but given it's empty, probably better to spend your time elsewhere.

This sauna cover 5 floor of an apartment block so the area is huge but i don't know if it is because they are posing age limitation that you will not find as many people as the near-by Hokuoukan.