Detached house on a hillside, approx. 220 m², 2.5 floors, gable roof - ideas?

I haven’t really followed this thread, but I see that the hobby room is getting the best location. I don’t really understand that.

That is a nice room, but not the best room. In terms of the view, the rooms on the ground floor are significantly better & as mentioned before, we don’t want to go down a large staircase to cook or live.

So: the depth of the balcony is unfortunately only a guess?

Currently 2.5 m

On the upper floor: there is no normal room. Every room (except the bathroom, if you generously disregard the 1-2 sqm at the entrance in the bathroom) has an area at the entrance that is unusable.

Yes, we are considering possibly having one less room on the upper floor and instead a child’s room in the basement. In the case of two children, both could sleep initially in one slightly larger room and later one could move down. The office would be omitted, since it is basically dispensable anyway. This way, the upper floor might be arranged better overall.

But fundamentally one should consider whether the stair location isn’t a huge mistake allowing for this patchwork of rooms. Also, the enclosed living room somehow feels too far around to me. If children are supposed to play there, Madame or Monsieur at the stove won’t see the children.

That’s a good point... Do you have an idea how the stairs could be done differently or better to achieve a better room layout?

From the view perspective, the rooms on the ground floor are significantly better &

Well, the basement rooms will probably have a view too, right? A view is nice and pleasant, but it shouldn't be prioritized. Short paths to the garden, meaning the USE, not the LOOKING should have priority. The view will be enjoyed in the first 2 weeks; life is meant to be lived.
Anyway - you have decided that way for yourselves.

That's a good point... Do you have any idea how the stairs could be done differently or better to achieve a better room layout?

New start! Especially because of the barely 3 meters wide kitchen/dining/living area, which is way too long and therefore has empty space but is too narrow across the board.

How about an architect?

So, not being able to get a reasonable room layout with the exterior dimensions for the few rooms is quite a poor performance, I think.
I kept the exterior dimensions and took a different staircase, and suddenly there are no more weird, convoluted rooms. You can really save square meters that way. I left out the windows.
When I plan for myself, I have planned two more rooms on each floor on the same area (and we plan without a basement), technical room and office downstairs and utility room and second bathroom upstairs. You probably don’t need a pantry with that big kitchen, because the tall cabinets should hold enough supplies.
North is at the bottom in my case (sorry for the rotation)

Please discard the plan. It is nonsense and not worth debating. New staircase, new luck.

we had raised the knee wall height again afterwards,

When exactly? The first answer to that was 150 cm ... It might be sensible to always include all ESSENTIAL information along with the plans when uploading new ones. That way, you save yourself quite a few follow-up questions. Although in the case of child 1, the knee wall must have been raised quite a bit ...

Yes, we are considering possibly one less room on the upper floor and instead a children's room in the basement. [...] The office would be omitted, as it is basically dispensable anyway.

This all shows that the planner gave far too little advice during the discussion. The room program and the cubature must have long been clarified when the preliminary draft is drawn.