Yes, but what do you want to teach there? Just imagine going in and out of the house with three people, small children can't yet dress and undress themselves. Then one of you stands in the dining area to put shoes on the child, to look for the gloves from "where?", to fiddle with the snowsuit... When you come back, possibly still from damp and merry weather, you take everything off the kid and send them upstairs where they are supposed to put the wet clothes in the wardrobe... And all that because three people absolutely have to be able to cook in the kitchen at the same time ;) Now I also know why you are asking about mold... naturally mold or mildew will develop there... That's why we're obviously not building, we have arranged things between the two of us. But it is one point I am really looking forward to: a hallway with freedom of movement and places to put things. I just measured the old hallway: 145 x 180, with all three doors opening into this hallway :(