Hello,
now a variant with a multipurpose room in the basement and the rooms on the ground floor.
New is the entrance on the house side. How this can be realized with the terrain would then have to be examined more closely. Retaining walls up to 2m are actually permitted within the setback area.
Another variant would be to move the bedroom to the upper floor. But always having to climb one staircase to get to the WC is somehow not nice, and I actually didn’t want to plan a third WC for a house of this size.
The concept with 2 “staggered” maisonette units requires a bit more brainpower. I have postponed that for now.