Single-family house with walkable green roof carport on a slope

I think it is never easy with a sick relative. Changes are difficult for your daughter, right?

Yes, especially when it is a continuous change, where you get used to something and then it is a little different again.

Then do it promptly.
Earthworks, meaning rough grading, should be done right now. The excavator is here, access will not improve.

The exterior facilities will be done by the same person as the earthworks. Since he already has a plan of our ideas, he can already consider the later design when backfilling.

Some things are simply dictated by the property and the desired orientation according to the cardinal points, and then there were things that were definitely more important to us than others. The playroom should be as central as possible,

I would have spontaneously swapped the living room and child’s room (without orientation, just based on the text). That would have many advantages, e.g. respect for privacy towards visitors or toilet users and the child. I would probably then have swapped the kitchen and living room in the next step... anyway... whatever!

But then everyone would have had to go through the playroom to get to the kitchen or we would have had to make a hallway there. When we have guests, we are in the kitchen or on the terrace. Guests who sit with us in the living room are very close to us. Also, anyone who wants to can use the bathroom downstairs. The terrace exit has to be from the kitchen... everything else makes no sense to me, and the terrace must face north. As I said... our preferences and needs are probably not standard, so I can understand if it looks strange to some. But for us, this plan combines the things that were enormously important to us despite (for us) easily bearable disadvantages. And I don’t think many have the opportunity to build entirely without compromises. But I like it imperfect. None of our cups or glasses match, instead of a wardrobe we have wooden shelves, large-format pictures hang on our walls that our daughter created in my mother’s studio (I deliberately don’t say painted), on which nothing is recognizable, the chairs in the kitchen don’t match, and half the living room is empty because we made it smaller with a room divider. And none of this is born out of necessity, but consciously done because we like it.

But for us, this planning unites the things that were enormously important to us despite (for us) well bearable disadvantages.

You see that wrong. Your important things could also be implemented with good "average" planning. What I mean is: your goals could have been better enforced. I see no planning here, just sequencing,

but deliberately done like this because we like it.

But I like it imperfect.

This is what I meant: justification of poor planning.

instead of a wardrobe, we have wooden shelves

We do too. We have the Ivar system.

large-format pictures hang on the wall in our home, which our daughter created in my mother's studio (I deliberately do not write painted), on which nothing can be recognized,

Large-format pictures hang in our home too... the better Yvonne would now say, because she can, the other honestly says that what is painted abstractly is more bad than good, what others can buy.

the chairs in the kitchen do not match

Every second household has that nowadays, the different chairs. I abolished that in 2014. What I want to say with this, without hurting you: it can always be better. In terms of planning. I just always find it annoying when this irrationality is defended.

But then everyone would have had to go through the playroom to get to the kitchen or we would have had to make a corridor there.

Nope. 2 meters longer corridor...

us. Also, everyone who wants can use the bathroom downstairs.

...who wants... but everyone is now looking at this toilet... there is no reason to make it accessible from a living area.

As I said... our preferences and needs are probably not standard, so I can understand if it looks strange to some.

As said above: standard is relative and often one’s own standard is not far from the mainstream. However, a sequencing of rooms is often explained by poor planning, and that is often rightly seen. That’s how I perceive it with you. I also wish for the idea of using basements in other houses. Many do not understand the difference between cellar/basement. But I have the feeling here that you then stopped solving various knots or forgot to shuffle things around in the planning. Alternatives were not experimented with or planned through at all.