At first glance, I would say that you waste a lot of space for nothing. The bathroom has almost only central space, little storage space, and little "wall side". Either you dress and undress in the bathroom, then you need some shelf space, or you do it in the bedroom, then you don’t need 15 sqm. The wardrobe is cramped, although there is a lot of space around it. Everything is cluttered in front of the WC door, which also needs to be used when you want to leave the house. For that, the width of the hallway then lies unused. If children are still to come, then a wardrobe can't be big enough. The G-shape of the kitchen is quite unfortunate. I recommend thinking briefly again about which kitchen shape you could best use. G is a mess because of the many corners. The storage room upstairs is so small that you can actually only put a nice cupboard there that offers at least as much storage space as the little room. It consists only of "traffic area" so you can get to the back corner.