One of the reasons why I am asking for help here: unfortunately, I have no idea about room orientations in relation to cardinal directions.
I am surprised that you or you guys even started on a draft that you have already sent to home construction companies based on budget if the original ideas are not even justified, namely the location and orientation of the rooms.
But I think you overlooked the north arrow at the top right on the floor plans?
I admit that, due to my activity on the phone, I have to rely on my memory because I don't have the photos right in front of me, but the utility room is then, despite my mental mistake that north is also up, in the west and not in the east. West is the favored living side if you are not particularly light-shy.
The utility room is in the northeast and not southwest?
.
And I have realized that there is quite a lot of wasted space in front of the stairs,
And what do you deduce from that? ??? Your thought processes go in the direction of leaving it and correcting something else. That is the wrong way.
The dining area between the kitchen island and the wall is 2.90 m wide; is that really so little for a dining area?
Yes.
On the other side of the kitchen island, there is about 1.40 m of "space." That is not generous, but is that really so little?
That can even be too much. But the draft does not get better by shifting the island 20 cm. Spatially, it is a compressed tightness at the walls, while there is unused space in the middle. That is not even good for yoga exercises.
The children's bathroom is relatively high on our wish list.
that this will only affect a few years of our lives at most and that we cannot and do not want to adapt the floor plan to every life situation. (How do you justify the vacant children's rooms when the children have moved out?) Therefore, this point is fine for us.
That makes one smile: children's bathroom has very high priority, but questioning the children’s rooms. Even full-time parents will later be happy about two free rooms. One needs a room for a new hobby, others want to let the grandchildren sleep on their floor. Does one still need a children's bathroom then? But it is about the stair location: if the children remain in the house until about 25 years old, you roughly have 15 years in the living room without privacy. Sorry, but you are sugarcoating it. Not to forget that the space in front of the stairs could be needed elsewhere. ... I understand your room program. When I criticize the execution of the guest WC or the dressing room, I am not saying that these rooms are superfluous. You misunderstand that. If one plans a shower bathroom for guests or children, then one should also be able to use the room adequately. Accordingly, it must also be planned that way. The same applies to the dressing room and also to the valuable living space. With this execution, you cannot even use the terrace doors. The plot is large enough to fill it as well. With the NE orientation (or east), one should push the house correspondingly far to the back and orient the rooms sensibly to the sun and arrange the living space as much as possible for the working day and the evening so that the sun position is optimally used. You do not want such a dark hole. Entrance on the left side of the plan, living rooms on the right, children's rooms also to the right and front. Bathrooms at the back left, so no one looks into the shower. Bedroom top right on the plan. The plot has potential, use it! I would delete the whole thing. Somehow, nothing is right. Sorry.