I assumed that in a house without a basement the space under the stairs is definitely used as storage space, and then there is only max. 1.0m of corridor left, upstairs it is only 0.95m. And then smaller or bigger children run through there with school bags... impossible
Yes, you are basically right. Although not implemented here, in a house of this size, rarely anything else is possible, at least not with these spatial requirements.
By the way, I had mistaken the HKV for the utility room door and mentally left out the correct door.
I also took another look at the bedroom.
Absolutely no-go: there is no space to get up!
As an example from our place: back then we didn’t think much about it, but a little. Since we have a 160 cm bed (gross width 170 cm), we chose a room width of 340 cm, and it could still use 30 cm more, because a chair or a picture on the wall also want space. You don’t build so that you later have to squeeze your body during routine movements.
This also applies to the dining area.
Regards, Yvonne