Male and Female sections.

É totalmente proibido tatuagem Não pode entrar no banho

I never saw any children at any of the bathhouses I visited in Japan, only adult women (and men, on their side). There's nowhere to put a baby while you're washing, no child "seat" or childcare facility. From what I've read, the kids brought to the bathhouses in Japan have to be toilet trained -- if an infant accidentally peed or pooped in the the bathing area they'd have to close down the entire thing, empty the baths, and sanitize. Also the water in the bath itself is far too hot for infants. (It's too hot for a lot of adults!)