The nicest exterior on the bath-square, quite busy the place seems to be always, even when it is 30+ outside. A lot of people book in advance.
1h costed me approx usd 80, in a separate room with hot sulfite-water-pool, shower and restroom, with a 10-15 min soap-scrab-wash included.
You can order a cold beer or a fresh juice as well.
Massage is also available.
Worth trying.