Floor plan of a family house in an edge location with an open view

I think I would be on your husband's side and would rather focus on the rooms than on the hallway. I'm also not sure (there are other experts) how far the light actually reaches. So whether it even achieves the desired effect for the "actual" hallway for you.

Furthermore, the WC seems quite narrow to me. Isn't a window supposed to be there? Personally, I would also place it closer to the house entrance, but that's a matter of taste.

Furthermore, the toilet seems quite narrow to me. Isn’t a window supposed to go there?

Yes, a window will definitely be installed there. Currently, the toilet is about 1.5 x 3 m. I think it should be sufficient.
The washing machine is to be placed on the upper floor. Another option would be to build in one half of the staircase, connect it with the toilet, and put the washing machine there (in the stair niche).
With 2 children, however, I find it more practical if the washing machine is upstairs.

I would not build the window in the hallway. You can see through from the street to the terrace at our place. I would never do it again. It doesn't feel good. Yes, it brings in light, but not enough to make everything beautifully flooded with light.

Well... the double garage is located on the southern boundary :oops:. Yes... we actually wanted to avoid that, but now we find this solution the most convenient. You can place the house all the way to the north and build a privacy-protected southwest terrace behind the garage.

I must admit that when I read it, I immediately thought: "good decision"
But when I loaded the sketch, I instantly thought this, not as a suspicion but as a fact:

I'm also not sure (there are other experts for that) how far the light actually reaches.

The garage "covers" more than half the length of the house and takes away the sun in winter or the darker months. Maybe some light remains from it between 2 and 4 pm in December before the sun sets in the southwest.
The window as well as the door in the hallway provide hardly any bright added value: a) the front door is set too far back and the east window is practically boxed in by two rooms inside the house, so natural light does not penetrate significantly inside.
Personally, I already recognize the approach of a hallway labyrinth, which itself swallows light through corners.
Also, I wouldn't like this hallway myself because it offers no openness nor does it welcome anyone at home.
I would probably have seen the garage placed at an angle on the east side and then a carport shifted next to it, also with the house positioned 3 meters from the north side.
The garage will still have to be extended one more meter to the west, since there must be 5 meters of space in front of garages. If I'm not mistaken ;)
If the sketch is correct, then too many square meters go to the hallway. The pantry entrance is too far from the entrance and, with 60 cm cabinet width, too narrow to provide an added value compared to cabinet space.

The garage "covers" more than half of the length of the house and takes the sun in winter or in the darker months. Maybe in December between 2 and 4 pm some sunlight will still remain before it sets in the southwest.

Yes...that is also my concern. Although the garage would stand about 40 cm below the house level, I fear that the autumn sun won’t care.

I would have rather seen the garage positioned diagonally on the east side and then a carport shifted next to it, also with the house located 3 meters from the north side.

Yes, unfortunately it’s not that simple. I spoke to the building authority last week. The garage MUST be within the building window on the east side. No exemption. Why? 1. The property is located on a curve – traffic safety must be ensured. 2. The neighbor to the north has a very narrow driveway. If I place the garage directly on his driveway boundary, it will block his view. So only a single garage in the north + carport somewhere in the southeast would be possible...

So: without flipping back, as your exact wish was regarding the south-facing window: I don’t see that implemented here at all. It feels like only the hallway and corridors. Plan B: In theory, can you place the carport outside the building boundary in the southeast? Then you would gain exactly the 5 meters the garage needs at the front for the house.