I do have the feeling that the OP doesn’t want to hear any criticism, but a few remarks about the floor plan. Bathtub in the ground floor bathroom, where usually the guest bathroom is, why? If you want to take a relaxing bath, do you then want to walk through the hallway in front of the front door? In a narrow bathroom with only a small window? And the kitchen, it has little storage and work surface for four people and no serious storage room. (Unless the basement apartment is never an auxiliary apartment, but rather a questionable home-office-type commercial use, where you can easily set up storage rooms, which would explain why you don’t need storage space upstairs... then you wouldn’t need to discuss floor plans that are just for the building authority.) Why is there another office on the ground floor? You’re building almost 300 sqm and have space like in an apartment? Just to finance the build through the wife’s club via rental income?
What is wrong with planning an auxiliary apartment to benefit financially? How it is ultimately used doesn’t matter anyway. Unfortunately, I unnecessarily scared the dogs here. Of course, it’s open who will move in there and also the room layout is not fixed at all yet. We will do that once the shell, which we are bound to, is approved. What speaks against putting the kitchen in the basement, bottom right, in the dead corners? Then all kitchens and rooms (office, SW, whatever) would be stacked on top of each other. We find the ground floor kitchen big enough. Of course, a large pantry cabinet will still be added, the rest goes into the storage room, which will also be at least 1 sqm bigger. You can already see here that everyone expresses their own preferences. Women will always recommend a walk-in closet and a separate laundry room and a large bathroom, while men care about the big screen :)
In the upper floor and attic, we want to change nothing except the chamber door and the storage space under the attic staircase, everything fits perfectly for us. Of course, you could plan a light well in the hallway, etc., but how often do you stay in the hallway? Similarly sized rooms were also requested. The toilet on the upper floor doesn’t really bother us either. One important thing we unfortunately forgot: The drawn furniture and their arrangement do not come from us. Of course, we would never place a bed opposite a toilet bowl upstairs, for example. I understand that you plan the toilet as far away as possible from other rooms, which makes sense. But upstairs we are a family, so the adjoining room with 17.5 cm thick walls probably won’t be tormented by noise all night long. The central ventilation system also does not filter out exhaust odors 100%, but supplies them back to the fresh air rooms in the heat exchanger. Anyone who has a ventilation system knows the problem when you make raclette, etc. It’s not that bad. I admit that you wouldn’t plan a bathroom next to the dining table, I get that. But I don’t see the nasty cloud of odor following you around. The kids’ dirty diapers smell much worse.
The ground floor staircase on the outside wall fits, only the bathroom is not optimal. Of course, we would like an additional room on the ground floor later, but do you really have to plan that now at the cost of the light? Probably not. The bathtub doesn’t necessarily have to be on the ground floor or basement either, even if that was originally planned that way.