Been here a couple of times on naked monday/wednesday (every day should be naked day!). Not all that many people but all were friendly and playful. Mostly 40+ but some younger too. It seems to be most active in the early evening, after office hours. Nice and kind staff keep the place clean enough. Awful towels and slippers provided. Condoms/lube are available for purchase. Admission is quite steep at 40zl though it includes a soft drink. Easy to get to with public transit, and just a two-minute walk from the tram station (ignore google map's bad walking directions, go down into the tunnel and out to the street at Os Czecha station, then it's just past a supermarket.)

From the West Railway Station PKP Poznań tram no. 5 to Osiedle Czecha (direction Stomil). Then you have to go down the stairs. Turn left. Get to the parking lot. In front of the car park is a building. On the building is the signboard Amigo over the door. Please come inside. Call the bell. Then take the stairs down. You can take a taxi. The return of tram no. 5 to Górczyn. Sauna Amigo in Poznan is the best. Fantastic place to relax. Nice and helpful service. At the bar you can eat well, drink beer and talk with nice staff or other fantastic guys. In the Turkish bath, dry sauna everyone will feel fantastic. The sauna offers a wonderful massage. There is a place for people who smoke cigarettes and can watch movies. There are darkrooms where you can also watch movies. Cabins are very clean in which you can experience wonderful moments. I highly recommend Amigo sauna.

Spent an afternoon there on "naked Monday" . The sauna is small but well kept with all facilities needed. The owner was friendly. It seems that locals come quite early because by 6.30 pm most of them were as did I. There's some some game in the Turkish bath mainly and if you find mr right then there are 4 rooms for private moments. Nice communal areas. Bar and smoking lounge.