I read that the men and women are separated... does that mean that people walk around nude? Or do people generally come in their bathing suits?

It's a gender segregated nude spa. Someone usually is watching to make sure no "inappropriate" activities take place. Depending on the day and crowd some people bring their children.

No clothes and it is The best scrub down ever. Can easily to go back. Very relaxing.

Naked as the day you were born. Kinda freeing, actually.