My English isn't very good, but I'll try to explain. So when they visit us, they usually get this specific room, let's call it a guest room. That room is right in front of mine, like 1 meter away from mine. My room does not have a door and anybody can pretty much walk in whenever they want. Normally this isn't a problem, because the guest room is empty, but every few months they* are visiting us and staying over for a couple of days. Now the truth is I don't have much of a say at home at anything really, which I guess is understandable considering I'm an adult living at home (I'm not making excuses, am currently working on fixing my situation). But the truth is when that person is at our house, he has the "power" I guess and I can't really do anything about it. I just don't want to talk to him really, but I know he would try to start a conversation with me if I was there.