I was here once yesterday and thought to myself, given the nicely put "the opposite of self-explanatory" drawings, I should probably check in again today. That was probably too short a wait.
One should have some trust and decency in a project like this. I have also lived with my parents under one roof. We were downstairs and the parents upstairs. You don't just run into each other's rooms like that. With the technology as an airlock, you don't hear every word from the other apartment, that's what I meant.