The Bordellos around Kremalia and Polanza is the hidden businesses ran by Markos and he's mob affiliates where drugs, prostitution and money extortion deals goes on.
One of Markos favorite spot is "Foxy Charms" is a high end ala Moulin Rouge era erotic club.
The dancers that wear a masquerade of sexy fox outfits with roaring 20's music in the background.