The concept of this game is truly cool, but I'm not sure that it works on a 8 hours game, for example.
But for a jam game, it works and is likeable.
However, The character aren't enough developped, I think. As PhoebeJ said, I would've liked to be more attached to them, For example by flashbacks or more problems... I don't know how.
But I really like the fact that only room changing has this kind of consequences.