I went to Prague for the bank holiday weekend a month or 2 ago, and while there visited Club K5.
In a word, it was fantastic. I was alone so only saw one girl, I believe it was the equivalent of £80, and for the atmosphere, service and the girl herself, I consider that a bargain.
The girl I chose was new, it was actually her first night so she was probably more nervous than me..
Really petite little thing, said she was 20.. long brunette hair, genuinely really pretty face, perky tits and arse, clean shaven.. If I remember, her name was Anika, or something along those lines, she worked the Saturday night.
We did a fair bit, OWO was very good, she really went for it, shagged her mainly cowgirl, half up the headboard while sucking her nipples..
She seemed really into it, she was quite tight (I'm average size) but she got plenty wet, left a little puddle on my belly when we finished haha.
I can't recommend the place enough, and I really look forward to going back. I plan to check out more places there next time, but if you only visit one club, K5 gets my vote.
Oh, and it's not far out.. I spent all weekend walking miles so it didn't bother me, it's about a 5-10 minute walk from Wenceslas Square, but you cut through a park / church that at night looks a bit dodgy - I got a taxi back as it was getting on for 11.
Hope this helps OP.