 The house rents 126 rooms on 7 floors to prostitutes for a fee of 180 Euros per day, which includes meals, medical care, and the 20 Euros of tax that authorities collect per prostitute per day (including Cologne's "pleasure tax" of 6 Euros).The women come from many countries; about 30% of them are German.They typically sit outside of their rooms and negotiate with customers who wander the hallways.