House on the slope floor plan fine-tuning

Honestly, I can’t really warm up to the room orientations and/or the floor plans. The house might be a matter of taste, but those protrusions above the windows are usually seen in South Africa or so, designed to keep the sun out of the rooms. But I’ll focus more on the floor plan:

Why is there nothing like that on the upper floor? Except in the bathroom and children’s room? If the view is so great, then I miss it when going up the stairs. Also, since understandably the basement gets its elevation, one should rather rotate the stairs so you can catch the view.

First of all, thanks a lot for your input. Finally someone who focuses more on the floor plan.

All 3 important rooms upstairs have a view to the "viewpoints." Our downstairs neighbor is somewhat lower but still quite tall with his roof. Towards the east, there's also a very nice horse meadow. So the bedroom and both children’s rooms have a view. In the southwest stands the very elevated and very blue house of the neighbor, who could easily look in there. That’s why we don’t want living rooms there. In addition, the sun comes from that direction and casts shadows there during the day. The stairs upstairs currently don’t have a window at all. I also find that wasted. I don’t spend time in the hallway. As you rightly pointed out, we have to economize on square meters upstairs...

What can the kitchen do now that’s more or better than packaging the kitchen without the bay window into the floor area? If you put the kitchen inside the house, you would enclose it with walls and might be able to do without the support column in the middle of the room. The effect would be the same.
The tight 75 sqm open-plan room is furnished with large furniture, but something like coziness when watching TV with the family probably won’t come up. In my opinion, the dining area is too much pushed into a corner. You have to know whether you’re happy with a 120 cm deep island, just like the child’s panoramic window facing the street so that everyone can look in there. I feel there is too little thought put into it.
Just like the southwest side for bathrooms, utility room, dressing room. That’s like pearls before swine...
Then there are doors with 80 cm width even though the rooms are already very big and high. That somehow doesn’t fit.

Actually, the kitchen can’t do more than without a bay window now (it’s possibly even more restricted), but I saw that in a Weber show home and immediately fell in love with it. If we now request quotes and it’s far over our budget, I’ll skip the bay window. But first, I’d like to plan it that way.
This huge living room is intentional. However, for coziness we decided on rotated stairs. Right now, when you come up the stairs, you walk towards the dining table. Because I wanted to prevent sitting on the couch with someone behind your back. Consequently, the dining table is somewhat squeezed... It’s not 100% optimal, but I haven’t had a better idea so far.
Regarding the child’s window facing the street, I totally agree with you, I first replaced it with one with a railing in my modification.

I also find the basement ill-conceived. You enter the office through the fitness room. You can do that, but with the house size there should be a bit more logic.

I would place the stairs more centrally but rotated. Also so that the stairs upstairs get daylight/view. At the moment, there is only a hallway opening. Then mediate the open space between the terrace side and sun side.

To better mediate the space conditions on the floors, maybe put the bedroom on the living floor. What the upper floor lacks, the ground floor has too much of.

That is partly due to the structure of the granny flat (there it would be the division living/sleeping area) and partly because my husband trains while being creative and direct access is practical there.

If you don’t place the stairs centrally, you get problems fitting all the rooms without creating huge hallways.

Where is the potential 3rd child supposed to live? I am currently stuck on the 38sqm parent area, where three children's rooms would fit well.

That would go into the office on the ground floor. It's the same layout as the children's room above.

On the contrary, it feels to me as if the "spirit" of an approved previous owner's plan must be "saved" at all costs here or at least the current builder can't get it out of their head. What results is the maximal entanglement of this "foundation" – so patchpatchpatch (the opposite of Clean Code). The consequences for the MTBF are often underestimated. Genetic pathology.

You're not wrong there, but I would like to hear some completely different idea on how the property should be used otherwise, since apparently there is a lot of criticism about it. Besides, there is a reason why the previous owner's shell convinced us, because it simply fits our spatial concept in terms of space requirements.

So .. I notice the staircase again .. it is not understandable at all. Apparently it has a spiral in the ground floor and basement, but no longer in the upper floor, and in each floor plan it is in a slightly different position. And when I then read the clear room heights... hmm.

Yes, those American-style built-in wardrobes can be nice and practical. But only if they disappear into the wall like with child 2. Although I think the size of child 2's closet is really not very generous. It's basically a 125 cm wide closet. And the one from child 1 is even less favorably cut.

The washbasin in the parents' bathroom is not well positioned near the windows. Side lighting is ideal.

On the ground floor I also don't find the dining table position particularly cozy. It’s basically like sitting in the stairwell.

In the basement the office with the strange stub and the window that cannot be a window. Your husband should try that out. Such a windowless office is really a mood killer.

I overlooked your message.
The staircase only has a spiral in the basement because I didn’t want to bump into the back of the sofa or wanted a bit more peace when I’m sitting on the couch and someone comes in. So you basically walk towards the table. But I am still considering what is better in this respect.
The staircase to the upper floor is straight.

Thanks for the tip about the washbasin. I am also not satisfied yet with the layout in the parents’ bathroom.

The strange stub in the basement office was specified by the architect. She said it might be necessary because of the statics (but it was still open, so maybe it can still be removed. We will have to see). Well, such a dark basement shaft doesn’t bring much light either way. I’d rather have well-lit artificial light. Especially since in this case it would be under a covered east terrace... But we probably won’t get away without the window. I think they are mandatory if it is supposed to count as a separate apartment.

So, unfortunately a lot is wanted here, but it isn’t well thought out.

That’s why I’m here.

But presumably we won’t get by without the window either. I think they are required if it is to count as a granny flat.

What’s this nonsense about the granny flat? Who wants to live in such a basement hole? Always these little tricks. The staircase definitely needs to be drawn as a section. Necessary heights could be undershot there... and, as said, it is somehow drawn slightly offset on each floor.

Well, such a dark basement shaft doesn’t bring much light either. I’d rather have well-lit artificial light.

New planning and office on the side where windows with a sill height of 85 cm can be installed, and a storage room in the area without windows. And a cloakroom doesn’t necessarily need a window either.

but I would like to have some completely different idea thrown into the room here about how the property should be used differently than like this, because there seems to be a lot of criticism about that.

For that, you would first have to provide the entire property with elevation data.