Floor plan single-family house in Rhineland-Palatinate

That’s already a lot said. Of course, I marked one thing or another while reading... and I will also address them as a resident of a single-family house with my husband and no children, so a 2-person household.

Definitely, I would place the door from the hallway opposite into the kitchen. Then a shelf would fit on the wall

That’s what I thought too.

I have to disagree with you: Look at the entrance (directly to the right after the front door): There is plenty of space for a wardrobe and shoes. That's more than enough.

There is absolutely no space.
Even if your way of keeping clothes is minimalist and you are not just a hoarder, all jackets that are currently around should still be counted. That is probably most intense in autumn or during the transitional period. Even my husband actually has the normal one in addition to garden, motorcycle, work, light, rain, leather, cycling, and heavier jackets ;) I have fewer... all in simultaneous use. And even if you don’t have that many now: the time will come when you throw away less and end up richer by some jackets.
It’s the same with shoes. For me, it’s starting now that I don’t know where to put the handbags. I never thought that 10 years ago. With us, many things now move by rotation (shoes, jackets winter/summer) into the study, but that room is right next to the wardrobe. Still annoying.
You will have a mega pantry but no hidden wardrobe.

At the entrance, the wardrobe goes on the wall next to the shower.

Then there’s room for the “I’m just going over to the neighbor’s clothes,” but not more.

You are two and could make it simple by building yourself a room. Possibly the pantry could be shortened.

As a quick tip I would suggest shortening the pantry, moving the door, and turning the rest into a clothes room.
Then I would rotate the staircase and use the space underneath for everyday things in a closet.

But basically, I like the house only at first glance: when you come in and orient yourself to the fact that there is no orientation, I have the choice between the pantry door or the corridor into the dark.
Didn't we already have a hallway like that last week, one that leads into the dark without indicating where the living space begins?
I find these barriers very unfortunate: on one hand a utility room, on the other a very long and unlit hallway.
There is also no door straight ahead that promises a light-flooded room. Intuitively, the pantry will be the anteroom to life. I don’t like it, it’s comparable to entering a utility room—just not nice for the resident compared to a living space.
I find it negatively formative that the rooms “behind” may still be great, but you always have to use this staircase hall.
And even if I put myself in the place: the hall is mega long, the house is therefore stretched out too long.
has already noticed this in the dining area: because even if the table is brought closer to the door, it is still several meters from the kitchen area to the guest or table, and then it gets a bit tight there.

So I would shorten the house by 2 meters. The office will probably then be the back of the living room, the hallway a transition into the living area, the pantry a bit more to the side so that the kitchen can be accessed more directly.
Also enlarge or adapt the bay window in the kitchen to the dining area.

I actually find it very refreshing to evaluate designs without children’s rooms because you can focus more on the resident’s needs.
You then often find the hobby room or an openness (stairs, gallery) that would be relatively impractical with children.
Here it’s the personal (sleeping) rooms that can be used individually. Not bad either ;)

I would have felt like I remembered your post from a long time ago. But now you should see my face: as if the man on the moon had a Marian apparition at Aldi! WTF is a "hip roof with eight percent" slope (that would be just over four and a half degrees in angle)? - I’m missing the mental image (by the way also of the exterior wall: it looks in the plan as if it were made only of laminated insulation?).

I feel like I should have remembered your post from longer ago. But now you should see my face: as if the man in the moon had a Marian apparition at Aldi! wtf is a "hip roof with eight percent" pitch (that would be just over four and a half degrees in angle)? - I lack the visual imagination for that (by the way also for the exterior wall: in the plan it looks like it is made only of laminated insulation?).

Freudian slip... 8 degrees.

Freudian slip... 8 degrees.

Fahrenheit? - Seriously: 8° roof pitch is very low, already unusual for an area, and whoever even made ridge stones for that, the selection "won't be large." Show me how that's supposed to look - I can't imagine anything that could be pleasing. From most perspectives at entrance level, it will also resemble a flat roof.

Fahrenheit? – Seriously: 8° roof pitch is very low, already unusual in the area, and whoever actually manufactured hip stones for that, the selection "won’t be large." Show us how it’s supposed to look – I can’t yet imagine anything that could be appealing. From most perspectives at entrance level, it will also appear like a flat roof.

I myself am curious how it will look. There are tiles – more on that later. Depending on the appearance, definitely a hip roof with a low pitch. The last word has not yet been spoken. There will be adjustments anyway – as the previous hints show. Under the stairs there will be shoe racks anyway (probably custom-made – but we haven’t yet found the perfect solution) and wardrobe parts. We have to see if it really makes sense to turn the stairs. At first glance certainly a possibility. However, we like it better if the stairs stay as they are. Still, we will keep an eye on it.

I'm curious myself how that looks.

Who initiated this unusual roof pitch, which quite restricts the selection of suitable materials – normally, there are usually homeowners or architects deeply in love with a specific model behind it?