Floor plan design - Constructive criticism welcome

and the end of the stairs does not match the ground floor drawing.

Well, in terms of head height one has to recalculate that - but basically there is nothing against stepping out sideways from the basement into the ground floor and going straight upstairs.

Because you want to cut the house off on the top left next to the air space and have an exterior wall there, you would have to somehow hold this wall somewhere in the ground floor. In my opinion way too much nonsense and costs for little gain.

I see it similarly - see the beam discussion (due to non-aligned exterior walls on ground floor / upper floor) at R.Hotzenplotz.

the house probably loses its two-story character with this and the air space?!

I can’t quite follow that (?)

Edit: but that’s not mandatory either, as I have seen

Explaining the template (table box) would be enlightening: what does the "-" stand for?

And the site plan with measurements, ideally with the house placed inside,

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I’m still amazed how one can guess the location based on the pictures

With two street names that is relatively simple craftsmanship, if they are not too common.

Wow!!! Great what has already come together! I also recognize the statics now... I just like the idea of a roof terrace to capture the evening sun. My left neighbor has built a great shade for my garden with his house. As far as I can see, there is shade in the garden from 5:00 p.m. The upper floor is definitely still a mess. Bedroom too small, dressing room probably too narrow. Bathroom rather too big... I find it difficult to derive a reasonable upper floor from the (for me) suitable ground floor plan. What if I were to halve the length of the roof terrace?

Basement living spaces cost money, light wells cost money.
What does it look like then in connection with a low rent?
Do you want strangers in your house where there might possibly be a zero-sum game costs - income.

Spatial conditions are difficult, you can’t just go into a show house and measure.
Take a look at your space situation now, what do you like, what is too small. On the internet there are also sites that suggest dimensions, e.g. bed frame - wall.
Enter the dimensions of your desired furniture, e.g. the wardrobes in the dressing room. Then think about whether the doors still open, how far the lady stands away from the mirror. Do enough meters of wardrobe fit in.

I would already accurately draw in the staircase. There is also a pinned post here. Different staircase dimensions and suddenly the rooms no longer fit.

A roof terrace is certainly quite nice - we are also planning with a second terrace, if the slope allows.
But just thinking realistically, on the ground floor is the fridge with the cold beer, the pantry with the red wine, the bottle opener and the glasses. How often do you carry everything up and down?
Someone in our town is also currently building a Bauhaus house. Ground floor, first floor with roof terrace like you, second floor with roof terrace on 3 sides. It will certainly be fantastic, especially the view.

I would orient the children's rooms to the south. I also don’t find the air spaces so great - but that is a matter of taste. They transmit odors (does this even apply with a ventilation system?) and all kinds of noise and in your case occupy the best side.

It is difficult for you to plan a house from afar.

: You're right. With the two streets, I found the place immediately now too :-) I wanted to extend the staircase straight on in the upper floor, as you then step directly onto the gallery and can look down and outside.

The roof terrace is certainly still large enough even when halved. It won't be the main terrace after all.

I wanted to have the staircase end straight on the upper floor, since you then step directly onto the gallery and can look down and outside.

That probably too – I mainly thought the other way around, usually the builders don’t like the basement stairs to end in the living room.

The upper floor is definitely still a mess. Bedroom too small, dressing room probably too narrow. Bathroom rather too big...

Fixable mess. Dressing room certainly uncomfortably narrow. But I won’t go into details here, it will be the first thing to be "redone." Also due to structural reasons.

I find it hard to derive a reasonable upper floor from the (for me) suitable ground floor layout.

That’s why I like to suggest starting with the upper floor and deriving the ground floor (because it’s usually less "demanding," at least for beginners).

What if I halved the length of the roof terrace?

For simplifying the statics probably rather a Pyrrhic victory.

Don’t find the open spaces so great either

These in-house balconies tear a huge hole in the otherwise well-insulated ceiling and are a complication for climate construction – but firstly still in demand and secondly probably manageable. For me personally, open spaces and galleries belong in the 80s like asymmetrical gable roofs, crinoline skirts, permanent waves, and Opel Asconas (and may rest there in peace).

Do you want strangers in your house where there might be a zero-sum game of costs and income?

Zero-sum game is not enough. That calls for tinkering with the entrance and the slopes.