It's pretty much clear with sex, even using a condom. What is not clear is why there are two big TV sets on the wall practically right next to each other. And what's more, they are mounted at different angles! By the way, the man can clearly see how much he enjoys his girlfriend. Although to be honest she looks like a plank!
The housekeeper showed a lot of chutzpah and assertiveness. So it would be strange if the master let it all slide. So he wasn't rude to her either, and he indulged himself in various poses, mostly crawling.