The interior walls can be placed freely, but there are supports and beams that cannot be moved. We have 4 supports on the upper floor and at least the same number on the ground floor. However, I still need to clarify this; these thick black dots seem illogical to me, as there is no load to be absorbed at those points.
We have now moved on to 2 more drafts; tomorrow, the future homeowner will draw, and I will write why we made certain decisions. After that, it will go into the next round. However, I believe it will be much more sensible – in the places where we do something differently than suggested, there are decisive reasons.