...is your friend.

I've worked around my lack of German by using Google Translate with Chrome, which translates pages automatically.  It does a decent enough job so that you can get the overall sense of what someone wrote.  Many escort, FKK and brothel sites have an English-language tab.  I concur with ISG as a starting point.  For the most part, it will get you in the ballpark.  If you let us know where you're visiting, some of us can help with some country-specific sites.