So, here I am again, with a little greeting from the witch's kitchen:
... and now I'll add a sketch of the upper floor on top:
(keep in mind it's just a sketch, even if it's colorful).
Just to show what could be done with walls stacked on top of each other; I didn't include differently placed windows on the ground floor for the sketch, only to show the room layout:
The bedroom could be above the office and the airlock, the beam allows the facade to be set back for a balcony. Shown here is a masonry parapet with a glass insert above the office window. I placed the master bathroom above the kitchen, with the children's bathroom next to it. The small room for the washing machine isn't the ultimate solution, more a provisional result of my thoughts. Arranging this room—like before with space for ironing—above the airlock would also be possible. Then even with a terrace on part of the garage roof.
Primarily, I tried to show what could come out of wall over wall and pipe over pipe—for example, that one child faces the street and the other the garden.
My roof idea for this is a flat roof, with a hipped roof section over the corridor on the upper floor (possibly entirely or partially glazed).