House suitable for the property? Is the size of the property sufficient?

Let's be honest: These aren't your furniture with exactly those measurements, are they? And if they are: you don't build a living room with a 2.65-meter wall length just so that your own sofa with 2.65 meters fits? What about the side table? Or a new sofa with 3 meters width? Otherwise, I'm reading with KS of 80 or 100 cm: The bedroom is way too narrow to get into bed. On top of that, there's the sloping roof. So you can only crawl in from the foot end. How about shrinking the dressing room by a reasonable meter so that this gap disappears and the bedroom gets an adequate width? The wardrobe drawn there in KS isn't really a wardrobe anyway, so it can be narrowed as well. How is the bathroom going to be furnished? The gap, for example, is too narrow for a toilet. Bathtub? The hallway is huge, the stairs narrow. Cloakroom small. The windows also seem too narrow to me. Otherwise, yes, a common room layout, just a bit of a mess in self-chosen fine-tuning. You could also call the fine-tuning desolate - badly planned.

Ok, you were probably right, we have made the floor plan worse by trying to improve it. I have now completely revised the floor plans and hope that it makes more sense this way. The bathroom downstairs has been moved forward so that the carport can be longer. What do you think about it now?

The upper floor makes more sense this way, yes. It is more functional.

On the ground floor, for example, you forgot a wardrobe for 4 people...

I have no idea yet how to implement the wardrobe downstairs... do you have any suggestions?

Straighten the corner to make the living room a proper space. Then shorten the living room by 60cm on the wall without a dimension. That could then become the wardrobe cabinet.

There is not much more to say about the half shelf.