Floor plan design, 2 full floors, approximately 130-140 sqm without basement

overall, there is one wall in the ground floor that is, in my layman's opinion, load-bearing, namely south of the stairs; the 10 cm ones (what material is planned?) are probably not even capable of hiding a corresponding beam/post inside.

This is a 20 cm one – at least it is noted as 20 in the drawing.

It was ambiguous, a 20cm wall next to the stairs and only there ([~3m long), if I decipher the plan correctly. All other walls are only 10cm. Thus, the ceiling north of the stairs would have to span the full width (~9m). That won’t be fun and is completely nonsensical, since there would be enough walls available. Conversely, a 20cm wall is extended on the upper floor at the children's rooms... Or is the dashed line meant to indicate a beam between the kitchen and dining room? Overall quite confusing or just too complex for me.

The wall dimensions are also unusual! Common here are 11.5 or 17.5 for interior walls where stone is involved and exterior walls 36.5 or 42.5.

If you are tied to the architect, I would also try to identify the "problems" and only give the guy the floor plan for "approval". Be careful, I just sent our architect plans again today where I had to correct almost 30% of the measurements because they were only "almost correct" in terms of inconsistent dimension chains or, for example, differently agreed door openings. Incidentally, the square meter figures also do not seem to have been really "updated", at least not the utility room? (north-east) and wardrobe don’t match in my opinion.

It was misleading, a 20 cm wall next to the stairs and only there ([~3m long), if I decipher the plan correctly. All other walls only 10 cm.
Thus, the ceiling north of the stairs would have to span the full width (~9m). That won’t be fun and is completely nonsensical, since there are enough walls available. Conversely, on the upper floor at the children’s rooms, a 20 cm wall is continued...
Or is the dashed line meant to indicate a beam between the kitchen and dining room? Overall quite confusing or simply too high for me.

I think the dashed line in the kitchen is a load-bearing wall. And also above the children’s rooms.

By the way, the square meter figures don’t seem to have really been "updated," at least the utility room? (northeast) and the cloakroom don’t fit in my opinion.

Thank you!

The wall dimensions are also unusual! Common here in this country are 11.5 or 17.5 for interior walls if made of stone and exterior walls 36.5 or 42.5.

Yes, here in this country. The construction site is near Zagreb / Croatia.

Thanks!

The QM numbers don’t really matter at first, there are more important things. However, I don’t know what the goal is now? To break open and forcefully move the staircase so that nothing fits upstairs anymore?

The QM numbers don’t really matter at first, there are more important things.
However, I don’t know what the goal is supposed to be now? Forcing the staircase to be moved so that nothing fits upstairs anymore?

The staircase would preferably be smaller, I don’t know if that’s possible. Is the staircase allowed to be less than 6 sqm? My idea was to have the utility room near the staircase and the guest WC and the cloakroom in the northeast. Sorry if I didn’t understand correctly.