PS. I still haven’t understood the problem with the staircase... :p @11ant, can you give me a little hint? ;)
The staircase is a critical element of every floor plan; you can’t change anything about it without reshuffling all the cards (unless you have
enough space for it and
around it to maneuver all connections flexibly). Your staircase, including the "landing," is about 2.50 m long, but in Kerstin’s example collection, it is about 3.40 m. That means the staircase will protrude into the hallway by 90 cm compared to the sketch. You can’t just "smooth out" this difference in the final stages. The principle that a floor plan is a complex interconnected system of relationships applies especially strongly to the connecting element of the staircase. Otherwise, only bathrooms are as relationship-intensive as staircases. You can verify this anywhere where the clients want to postpone the decision about the exact arrangement: you have to easily calculate about three square meters of flexibility allowance (for an entire bathroom, less for a guest WC). You "should have" done the same here for the staircase (but you didn’t). Accordingly, your head will get hot if you continue working with the sketch.