City Villa Floor Plan - Feedback Desired

Concept with courtyard, separated by a concrete carport and wall.
This is just a quick approach. Somehow like this.
As I said, I would go back to square one!
Upstairs, you can arrange a children's wing in a row. Then you could create an open space in the all-purpose room without making the bedrooms upstairs restless. Unfortunately, in this case, the children's rooms would only face north. But this could be remedied by window areas in the upper floor hallway and light strips above the children's room doors. However, it could turn out quite differently with another approach.
I just posted it so you can see what is possible on such a property.

You can afford a professional, so why put only layman’s knowledge into the house planning?

After the emerging (justified) criticism, we may not be able to avoid it. Why do it yourself? Because it’s fun

The walls or the structure of the room are thereby abolished. Do you understand what I mean?

I understand.

By the way, I think I see that the chimney is not aligned vertically.

That fits, I just measured it again.

The thought would be to question whether the desired house shape is the right one. Simply question it and try something else.

The house doesn’t fit the plot either.
Which brings me to the question whether, combined with the already identified (?) crutches of the floor plan, it even makes sense to tinker with it or whether it might be more effective to go back to the beginning and start again with a blank sheet of paper!? (Ok, graph paper would be better )

Ok, so back to the beginning again.

Which shape do you recommend for the plot? Here are a few rough ideas:

A) 9m x 15m
B) 11m x 13m
C) a combination of A and B (L-shape)
- street side 9m x 6m
- garden side 12m x 8m

Concept with courtyard, bordered by concrete carport and wall.
Just a quick approach. Somehow like this.
As I said, I would start all over again!

That would then be Option C (of course with different dimensions)

The staircase is not standing there as a sculpture reasonably free, but pushed to the edge; moreover, it is not even finished as a theme, when already the door to the side wing appears (regarding which I think Franky73 has already suggested swapping the parent and child wings).

Imagine you have just entered the house. Closing the door behind you should come with a feeling of security (attacks from behind are now out of the question), but wait: up here there is no cover. This continues with all the airspace areas or associated "galleries": rooms are not opened upwards (or between upstairs and downstairs and vice versa), but merely the ceilings are scalped. This is similar to the flat roof: the uneducated Bauhaus fan also does not understand that this does not simply come about by omitting a pitched roof and substituting it with a lid.

It is the same with the awkwardly staged openness of the rooms here: it feels like you do not look all the way to the living room, but that the sofa stands in the farthest corner of a huge windbreak. The upper floor is then practically a monstrosity par excellence: the rooms are inappropriately cramped for the overall area and scattered into the corners, the overdose of free space in between is tried to be escaped through a hole in the floor. If you have later built a nice house, you can put the design discussed here in my Outtakes thread "Grütze".

Where does the L-bay window actually come from (it cannot be due to lack of space otherwise): is the motive to "loosen up" the building mass?

The only sympathetic thing, and therefore consciously omitted in my criticism, is that here the parking spaces sit at the kids’ table and not, as unfortunately popular today, the human dwelling gets the space left over by the king-size double garage.

Thank you for your feedback.

It's a pity that you have quite a distance to Hannover Langenhagen. There are two show houses there that you should take a look at. Kampa No. 16 also has the parent wing with a sauna as you are planning, and Huf has an open design with a gallery that matches your ideas. Not this half-timbered look, but open with a gallery without feeling uncomfortable.