No tattoo restrictions. If you are worried about other people's eyes, you can use a private bath ...
Oh, of course it is also a sauna.
Public bath, open-air bath, swimming pool. If you can hide it with tape it is OK.
Tattoos, tattoos No special restrictions. I put it in normally.
About tattoos are in principle prohibited. One point was also impossible.
About tattoos are in principle prohibited. Even one point was NG.