You have the wrong address for Sauna Marco. The correct address is Lublanska 17, Prague 2, Vinorady. This is near Wenceslas Square.

On my visit it was very smoky, no condoms, ice-cold showers and just a few couples, none of whom were interested in being friendly or speaking English.

Pro: Cute boy at counter
Cons: 1) Overcharged by 100 Crz
2) Not crowded at all
3) Whirlpool smells like urine
4) Video room didn't have anything playing
5) Too dark

Definitely recommends Babylonia over San marco