I've added the Roxy Sex Theater to my map linked below. Not sure how it escaped my attention for so long, but it's there now. This is a sex shop and porn theater that has separate rooms for hetero and homosexual audiences...and dark rooms for both as well. Here is what they say on their website (machine translation):
http://www.roxysexbioscoop.nl"There are Monday to Friday from 12:00 to 18:00 dear ladies present to perform sexual acts for a small fee. You need this for yourself with the ladies agree that you will be offered to the agreed Know act. The roxy sex cinema has no connection with these ladies. Ladies pay just like everyone just entrance into our cinema is just a guest at the roxy sex cinema."
Reviews at
http://hookers.nl are mixed, some good, some fair to poor. One thing of note is that the women working there seem to be mostly or all Dutch.