if you take away one meter from the house below [...] or am I missing something?
Yes, you also take that meter away from the dining table. That definitely costs three seats.
The duplication of dressing room / changing room – although their division of tasks is unclear to me – seems complicated.
Yes, we want the gallery because we think it makes the house a bit more interesting...
Like a thousand others, and just like that, the originality is gone again. That would actually be a prime spot for a painless removal.
I don't see any further planning errors at first glance.
Oh yes, the location on the property. That’s an entrance length like on a pipe-head-shaped lot. I would quickly push the garage about a dozen meters closer to the street. Screw the passage – you don’t unload laundry from the car, and there are hand trucks for water crates.
And suddenly, you can place the house more nicely, with more west-facing terrace, for example.
What doesn’t come across as crazy on the plan like in reality: the huge roof overhang (yes, I have definitely read "BY") doesn’t fit at all with the modern facade on the extra-flat pitched roof. It will look like diva claws. Mind you, not like those from Munich, but like those from Zenzi’s studio in Hintertupfing.