We pre-booked online as it was about 3€ cheaper. This is an audio tour and you are talked through the tour by a Russian prostitute. When we entered we were promised it would be lots of fun. I don’t know what more I expected, but was a bit disappointed. We saw rooms that the prostitutes use, and were talked through the different types of things prostitutes do sexually. It’s something to do. But if you didn’t go you wouldn’t be missing much.