I went and there was plenty of action going on, but as in many situations, I was one of the better endowed. I didn't try to measure up as I know that I'm not 18cm unless the measurement is "creative", but € 8,00 plus a drink was really reasonable for the amount of action going on. There were a few larger getting lots of attention, no real monsters, but everyone was having fun. That place has a lot of nooks & crannies and every one of them was stuffed with guys getting off - including one guy on the platform next to the bar who must have gotten fucked by at least six different guys during the two hours I was there.
Plenty of condoms, lube & antimicrobial hand lotion at every turn, and safe play is the rule. No pushiness or rudeness came my way, which really helped to calm the nerves for this n00b.