Floor plan design single-family house 150 sqm - tips for improvement?

Exactly that rough. Maybe arrange the stairs differently so that the hallway can be separated again by a door before the entrance. I think privacy is lacking that way

So make the hallway longer? How wide should a "reasonable hallway" be, since the stairs are already 1m wide, then the railing...

No longer. It would be enough if the hallway is separated starting from the bathroom door. And you wanted to become a bit smaller. The children's rooms are quite large The basement must also be redrawn if the stairs are reduced and changed Ours is very spacious. I have to measure it sometime. I estimate 1.2 m next to the stairs

And how is that supposed to work with only one possible floor? Only a single-story design is possible!

I understood it but then find it more reasonable if you also make suggestions, like you currently do. Thanks again for that!

On every page in this thread it feels like it says that you should swap the levels.

On every page in this thread it feels like you are told to swap the layers.

I am doing that...????

So, for example, roughly the ground floor?

Even though I assume that the architect's design will be different. Just something to think about. The dressing room and bedroom look quite spacious on the screenshot. But they are not, so don't be fooled, - If a bed is 2m x 2m, you have just a little more than 50cm of space on the left and right. That's the width of a PC keyboard. - The same applies to the dressing room: cabinets are 2x 66cm with a baseboard. That leaves you only 1m of space to move around.

I'm doing that...????

Yes, now
You complained that no one helps you constructively!
But whatever now, it's running anyway