Forget providers out there, go to the FKK clubs! Sharks and Oase are my favorites. There's admission...like 60 euros, you get to stay as long as you want. There's free food, drinks and depending on the night you go, there might be 50-70 hot naked girls there to choose from. 50 euros gets you 30 minutes. Upcharge for things like CIM or greek. Think of a strip club on steroids.