Maybe a bit of a push, but less than 90 mins on the train to Vienna - where there's a great FKK club and some laufthauses. Could go early afternoon and still get last train back to Bratislava.
I don't think there is much of a punting scene, but I really liked Bratislava. The old town is very pretty and you don't have the crowds and touristy crap that makes Prague so unattractive these days. Worth a visit.
Lots of girls work from flats, check sites like External Link/Members OnlyExpect minimal English, use google translate to communicate.There are some brothels (open in the evening). Look for places called Royal Club, Messalina or Babylon night club (this place is at the Racecourse).
From just £36 per year