Yes, measurements would be nice. In the pictures, the rooms first look huge, but when you see the square meters, you can roughly estimate the rooms.
Tell your planner that each apartment needs exactly 6 sqm of storage space/room. This was exactly taken into account by us, also the EU building authority. Doors are, I think, 1 meter wide. The bathroom in the granny flat is quite small. With 2 residents in their mid-60s, just consider whether you can get everywhere easily with a wheelchair/toilet chair. And keep in mind, when using a toilet chair, there are always two people involved.
On the upper floor, at first glance, I thought I had to puzzle it together first. It takes a while to find your way and assign things properly. I imagine it would be fun when you have to transport, for example, a mattress into the master bedroom. :)
I would not plan completely without a bathtub. Especially with small children, who sometimes get sick or come home soaked, so straight into the tub. ;)