As far as I understood (the first day - when Erik was there). They just rented an apartment and are cheaper. Month probation.
Further, or settle in different apartments or new apartments, based on the statistics (popularity of couples).
Many owners take money and they do not care what's in the apartment, the main thing is to clean.
Some, on the contrary, closely follow the apartment, suddenly go to visit. Communicate with neighbors, especially if earlier in this apartment they lived and everyone knows.
As I understand it, the owner said:
"On you complain, you go crazy at night!"
Then he saw the cameras in the bedroom, he said porn studio.
Participate porn (actresses) in Ukraine outlawed (in contrast to Russia, where only the organizers bear responsibility). The owner can call the police. Or demand a bribe.