Are the bath house clothing optional? Or is there any around?

Wear swimwear but that are both houses where you can have a private bath with clothing optional. Of course, with an extra cost

Swimwear

I don't think these are. They are more family oriented. And when I sat, family, I meant that in the traditional sense, lol.

Swim wear required. No clothing optional that I know of.

Swim wear attire. Because the purpose of the bath house is to submerge in mineral water. You want to be sure your clothing does not get in the way of the minerals reaching your skin. Yes, there are several bath houses.