Uncertainties regarding size, planning itself is so far completed

What today is developed as a basement or attic in old buildings used to be "only" inhabited by the "servants." No, the word is not meant derogatorily, it really means that, see Wikipedia. Back then, no one lived under the roof voluntarily unless they had to.

But it fits: Servants also do not enter the house through the front door, but through the side door, which today is also often planned from the garage (the one you insisted on at all costs)
Just google who all have spent the night under a tent roof, you will find steppe dwellers, Native Americans, as well as scouts.

and now I am, as I said, very satisfied with 2.85m - also in the bedroom.

Do you have it now or is it just planned?

Upper hand; yes, of course.

The double casement windows often look like loopholes when they are usually so small and the roof thickness is often so strong nowadays. Just google Roto panoramic roof windows, that’s the opposite. Looks great, I think it costs five figures.
...

Velux has 134x140. Costs a bit more than 1000 euros per roof window and in my opinion is not a loophole

Loop holes? I can't say, but they also have 114x140cm double casement windows, which feel quite airy.

We have a ceiling height of 2.50m upstairs – that is absolutely sufficient even for bedrooms. In your competition, the living area on the ground floor was certainly meant – upstairs higher than 2.50m is rather unusual – but certainly not bad. However, this also increases the heating demand, but you have probably already calculated that

As I said, it’s basically about building a "city villa". Taste is variable after all

Show me a picture of your 114 x 140 please

I had a room with a sloping ceiling as a child. The knee wall in my parents' house was 1.25 m. It was cozy, but due to the size of the room, I always had problems with space for furniture.

I have now lived without a sloping ceiling for 25 years and do not miss it.

Our town villa offers plenty of space and no problems with furniture placement due to a knee wall.
A family among our neighbors thought that a house only becomes a house when it has sloping ceilings on the upper floor.
During the obligatory tour at the housewarming party, this family was amazed at the spacious effect on the upper floor.
Their house is 50 sqm larger, but it does not feel bigger.

The next house will then be a bungalow for old age.

However, I also find a house with a dormer very nice.

In addition, the variety of house styles is nice. It would be boring if everyone built the same.

Unfortunately, I only have photos before the screed and in the chaos. From the end of next week, I am allowed to go back in

I envy you those things... ours are smaller
Is there already screed in it?