I visit Krakow monthly with work for 2-3 days and can confirm its a punting desert.
All the strip clubs are complete scams. Just don't go in a single one of them. The local police are in on the scam as well as the local taxi drivers.
Can't personally recommend Club Ibiza either, I found pressuring, miserable ugly girls and expensive drinks, but at least didn't get mugged / drugged.
The one whorehouse near the centre of town on Ul Dluga had an assortment of fucked out, disinterested late thirties plus hags.
Roksa.pl and Odloty.pl only really work if you use a local mobile and have at least a few words to spurt out initially in Polish. They are the only places I've scored and most certainly not at some of the comedically low prices that are supposedly on offer. In fact, a considerable proportion of the ads are just fronts for the strip clubs.
Trying to pull locals is quite hard work as well and many are 'good catholic girls'
I've managed one rather plump bargirl from the Hotel I regularly stay in but it took about 6 months, at least it's a regular outlet for me now..................
In all Krakow is SHITE and you are better off punting in the UK.