Is there a room that your cats prefer to spend most of their time in? Vincent loves our living room and Magnus will stay in the bedroom often. I don't know if they've agreed to share our house like that. Our kitchen and the other rooms are the places to meet.
Yes. Any room that I'm in!
Same with Barsik. He hates being alone, so if it happens that we are all in the kitchen having a meal, he'll always start crying calling us to the room he's in LOL.
When it's possible they prefer to spend time with us too but when they want solitude (sort of because usually no room is truly empty) they head for "their" room each.