Users of a (single-sex) sauna in a Hungarian hotel or at a thermal baths typically go naked. There is often a plunge pool of cold water outside it (also in the single-sex area). How does one use this?
Is it necessary to shower first and then put back on a swimming costume?
Can one shower first and then jump in naked?
Are they generally for one person at a time?
How long is appropriate to stay in the pool?
Does the tap that fills the pool stay on continuously, letting the surplus overflow to the drain?