12x9.6m 2 full floors, basement, attic, 4 children's rooms

Take a look at the floor plan of Arifas. Arifas' floor plan has 5 children's rooms, a nice separate parents' area on the living level.

Morning, by G reflecting you probably mean the kitchen. I like that, I'll think later about how that could look concretely.

For now, I’ve moved the bedroom window. Now it faces south and no longer the street, so it should be "quieter."

We find the office and bathroom arranged as they are now really good. In the large shower, you can still install a bench under which the controlled residential ventilation pipes for exhaust and supply air will be routed through the house wall. I find that nicer than having a pipe sticking out in front of or next to the house from the ground, especially since you can easily accidentally hit it with the car

First clarify whether they are allowed to stick out just above the Earth like that. Those things have a pretty large diameter.

Just unqualifiedly interrupting: Sliding doors are expensive if they are supposed to look nice.

Somehow a guest toilet is missing I just imagine a bunch of teenagers on a Saturday evening in the living room and I want to go lightly dressed to the loo or take a bath ...

Are you moving in there too?
Just a little joke from me... but I completely agree with your opinion.

Just imagining a bunch of teenagers on a Saturday evening in the living room and me wanting to go to the powder room or take a bath lightly dressed ...

Well, just let them have their time, the phase of wet dreams passes so quickly

Hi, by G mirror you probably mean the kitchen. I like it, I'll think later about how that could look concretely.

At the risk of repeating myself: I don't see the draft in its final refinement phase yet.