Thank you very much for the feedback! The chimney, especially the position, definitely still needs revision - thank you for the hint. The former "dead space" behind the bathroom on the upper floor is intended (via a small access in the bathroom) to serve as a broom closet/storage room - nice that you see it the same way. In general, the suggestions given in the past - especially moving the children's rooms to the ground floor - have been discussed and planned with the architect. Unfortunately, too many disadvantages arose, especially regarding costs and excessive space, so we discarded that plan again. The open space here serves as a small compromise, which we wanted from the beginning anyway, to bring the upper and lower floors a little closer together. Very grateful for further suggestions