Don't worry the baths are super clean and I promise you that you will never have an opportunity to go to such bad-ass saunas again ever.
up to 6 different hot tubs, some with herbs floating in them, some with salt water, some hot tubs made out of gold, numerous types of jetstreams coming from below the sides and the ceilings, etc. Also their are numerous different saunas as well, all intricitley designed such as granite beds, quartz rock beds, etc.
I understand if you're uncomfortable with public bath situations, but Im telling you will never find CLEANER and such elaborate bath houses as the ones you will see in Korea.
but again you have to find a nice big one in Seoul or Busan, and not some small crappy one.