I like how they do it in Mexico: block off a few square blocks with one entrance/exit, pay a fee to go in (in Mexico is $20 pesos, about a little under $2 dollars) have some clubs/nudie bars in there with their own security, have a police station located not too far away or preferably within the compound with their own entrance/exit in case they need to go and tend some call elsewhere or have the place located behind a police station with a back door going into the compound to answer calls from within, and then between the clubs have the rooms for the ladies that work outside the clubs with their own bathroom/shower.