As long as there are cameras in the apartments, it will NEVER be real. Peple just won't behave "normally", no matter how comfortable they are with the cameras around. You've never seen Adriana naked in the front room of their apartment but, as horny as Adriana is, do you really think they would NEVER screw on the sofa if there were no cameras? Sure they would..... Right on the kitchen table....
Same kind of thing for the guests at Maya and Stepan's. Those girls (chubby redhead included) obviously hide from the cameras. They'll go somewhere off camera to change or do the bra off and on under the shirt trick. Seriously? They'd do that if there were NO cameras around?
It's all fake to a certain extent. The only good thing is that you get to see a variety of naked girls (but no older ones and rarely a chubby one- with the exceptions of Beatrice for a few weeks, Alina's friends and the one in C&S apartment).
You also get to see a variety of lovemaking styles... from the sex that's not even worth the effort to watch, to the sex that even the neighbors enjoy!