Child 1 and guest exchange... Child 2 is really very unhappy with the window in the corner -> aha! That is due to the symmetry towards the outside: I know why I now love asymmetry and detest this struggle in a city villa ;) The rooms themselves have entrance channels. Why? I would straighten the rooms in favor of a larger hallway. Downstairs, I find the layout okay but would move the door to the living room one meter (the entrance corridor is not needed) and integrate a proper kitchen. That means planning one or two tall cabinets for refrigerator, oven, and so on. If necessary, built under the stairs.