Short version: our favorite club, period. We were there last weekend.
Full review: We've been to about ten European and ten American clubs, and we both agree this is the best. We're married, 39 and 37, and we were near Prague on vacation, so we gave it a try. Key things from the website: payment is cash and they recommend a reservation.
Originally we only meant to go on Saturday, but after a lazy rainy Friday we decided to go Friday too. The club is northeast of the Old Town, about 20 minutes by Uber from Prague Castle. Both nights I wore dress trousers and a shirt, my wife a dress she could quickly change out of into underwear. We only had a reservation for Saturday, but we took the chance and just showed up on Friday. Right away they asked whether we had a reservation and asked us to make one next time — but otherwise no problem.
We arrived around ten and it was full. Right at the entrance you put your phone in a lockable locker up front. Then you go down to the bar and get a wristband — blue for full swap, red for no (we liked that). Then you get a key to another, larger locker with towels and a sheet. Some people got a tour of the club; we walked around on our own.
The club isn't big, but it's the perfect size. The non-sexual area has tables, couches, a bar, and a small stage with a pole. It looks nice. You can be there without clothes and even be intimate together if you want. The private facilities include a room done up like a dungeon with a cross, gloryhole rooms, a large social room with padded benches, and several smaller, comfortable rooms.
Both nights started similarly: first everyone stays in the non-sexual area while two lightly dressed dancers take turns on the stage. At 11:00 p.m. the owner gets up on the stage and gives a motivational speech in Czech, of which we didn't understand a single word. One of the dancers then performs once more, doing a seductive number to two songs, the owner says something else motivational, and everyone applauds. It was a great start. In less than 10 minutes almost everyone moved into the back.
Good to know: consent works differently here than in the US. Generally someone reaches out and touches you; if the other person doesn't ask them to stop or move the hand away, they continue. The cost for the night with an alcoholic drink and water was around 2,000 Kč, about 100 dollars. Not much English was spoken, though we'll admit we didn't attempt many non-sexual conversations.
Friday is the night the club also admits single men — per their schedule that happens every other week. We prefer swapping, but we weren't against an extra man either, if it felt right. We went to a smaller room to start. A single man followed us in; I asked my wife if she was okay, she said yes. Within five minutes there were four more men. But the crowd all at once was too much for my wife, so we asked everyone except the first to leave — and they all did so very politely, some even apologized. It's that easy, but you have to be willing to say no.
When things with the first one ended, another couple came over and asked if they could join. We said yes and a full swap happened. Then we decided to explore what was going on. The atmosphere at that point was very open — even after ten years in the scene we were almost blushing. It was wild and amazing at the same time. My wife, who considers herself experienced, said she felt almost prudish next to it.
Later, one woman I most wanted to meet started touching herself in a corner. My wife, who knows my taste, urged me to go before the others noticed her. I hesitated, and within a moment there were five more men there. So we enjoyed ourselves together again for a while. An hour later that woman was still going, and I got involved in a free moment. She asked about protection, I said yes. It was a great night.
Saturday was couples-only. We came a little later and there was nowhere to sit. We chatted for a while with two English-speaking couples. This night was more traditional but still great. Most couples met up quickly in the social room. A full swap happened twice and we had a great time with people we hadn't known before. After that, while my wife was standing at the bar and I was coming back from the toilet, an attractive couple came over and just asked if we wanted to swap. Her answer was yes, with the caveat that I might not have much left in me since I'd recently finished. We went to a smaller room. The other woman said she was happy to just watch, which suited me. After a while she asked me to touch her, touched me, and shortly said let's keep it to just the essentials. After a nice while she explained that she liked that I hadn't been pushy and grabby like some others in the club. Not pushing and respecting exactly what she said paid off. There's a lesson in there somewhere.
We left the club at 2:45, just in time to shower and catch our 6:00 a.m. flight back to the US.
Addendum: in our view the European club scene is a lot better than the American one, because in our experience 90% or more of the people here come to genuinely enjoy themselves.