what I don’t quite understand is why you are planning such a large bathroom for the children? My children only bathed about 1-2 times a week until they were about 5 years old, after that never again. Also, you don’t need two sinks for the children since they will never be in the bathroom together, except maybe as toddlers. When they are older, they should theoretically clean the bathroom themselves, which would be difficult to enforce with such a large bathroom. You won’t be able to use the bathtub in the children's bathroom anyway, unless you clean the bathroom regularly for the children. In the hallway, it would bother me that I can’t see who rang the doorbell and is standing there because there is no window. So I would plan for a window or a fixed glass element next to the front door. In the kitchen, I would prefer a window directly at the cooking island, it brings light directly onto the countertop. Best regards Sabine