Bungalow floor plan max. 140 m² - dimensions according to the standard ok?

No, it is not us who are in the wheelchair, but someone from our family.

So the guest toilet must be wheelchair accessible and the path to the dining table and the living room, right? The person won't be cooking with you, will they? A wheelchair accessible kitchen would be another matter. Will the person also stay overnight in the guest room? Both doors (guest toilet and guest room) are only, if my eyes don't deceive me, 80 cm wide – too narrow for a wheelchair. The corners could also cause problems. Overall, I wouldn't create access to the guest room through the wardrobe – shoes often lie around in a wardrobe and this one is not big. For a wheelchair, that's an almost insurmountable obstacle...

The path from the hallway to the living room goes through a double door that has a width of 1.76. The width (and height) of the doors are unfortunately still incorrectly marked. The width to the Gäste-WC among others is 90 cm. The guest room will not be used by the person. Although the kitchen is not wheelchair accessible, we still hope to be able to cook together or to integrate it a little.

Roller-accessible doors are 1m wide - even with a width of 90cm you risk abrasions on the hands. So if you are already building extra large for the wheelchair user (which I find very noble!), then be consistent and really design the area relevant to her to be truly roller-accessible. And if she is actually supposed to cook along sometimes, I would also take that into account in the kitchen planning (possibly plan a section of the countertop at normal table height and without base cabinets, so she can get there with the wheelchair).

For me, the guest toilet is still by no means roller-accessible (I think it is overall too tight for a wheelchair and someone who has to transfer themselves onto the toilet). I would really plan that as a disabled-accessible WC - with the necessary fittings like the roller-accessible flush, grab bar, sink lower and roller-accessible (they have a recess in front), the mirror adjustable in height, etc. If overnight stay is considered, then please a larger door (it is definitely only 80 wide) and not through the small cloakroom and also around the corner there. A ballroom as living area helps little if the wheelchair pilot can’t even properly get to the bathroom...

oh, sorry, just reading that the guest room is not being used - then forget my remarks about it. Better to take a bit from the guest for the roll-in accessible WC or remove the shower there so that there is enough space for it.