Leave out the 2nd residential unit. Who knows what will happen someday. What doesn’t work today, is usual tomorrow.
There is little space for the house size at the bottom and everything looks a bit too much at the top.
You come home with a Maxi Cosi and a child by the hand. Where do you put what?
The dining area consists of 2 benches and a relatively narrow table. High chair, moving the chair away so the baby bump fits, is not an option.
So some of the space requirement has to go upstairs. Entrance, wardrobe, garage are not possible. The kitchen belongs to the indoor and outdoor dining area, so it also stays downstairs.
Living should be a retreat, watching TV in peace, making phone calls, etc.
I am a fan of open-plan rooms, which is difficult here, but they have a disadvantage. No retreat. The girls want to drink coffee in peace, the men watch football. A phone call without disturbing the partner.