The bathroom upstairs is (too) big, so I would have considered putting the washing machine + dryer in there and hiding them in a nice cabinet, which would leave the utility room space free. You should be careful with the bathtub because the window is directly behind it. In detail, this can get tricky or unattractive, so I would suggest a wall there at least up to the height of the bathtub, preferably a "normal" parapet. That would also be better for the other window, since a floor-to-ceiling window in the bathroom is usually not a good solution. This would also solve the bathtub issue, and I would build it directly against the wall instead of leaving a narrow gap. If freestanding, it would also need visible space around it. When choosing the bathtub, you should look closely to find a beautiful model for such a prominent position; it doesn't necessarily have to be much more expensive. You will also need an extra pre-wall for the bathtub, which is no problem and also provides nice shelf space.
I don’t like the bedroom yet; the door barely opens. If that’s a row with 60 cm cabinets, that might already be enough, and leaving out the second row would do the bedroom good. Currently, you can barely get around the door or have to open it fully to get in, which is not really good. What you want to do well in the children’s rooms, you forget about in your bedroom. Then you could also consider a half-height wall where the headboard of the bed stands, and this wall pushes the space back towards the dressing area, or skip the dressing separation and, for example, put the cabinets to the right of the door and design the then large room nicely as a bedroom. Currently, I don’t find the layout nice; the dressing room is "almost" as big as the bedroom, and I find the proportion inappropriate. Maybe mentally detach yourself from a typical dressing room; there are endless ideas for a stylish bedroom without a "dressing room."
For children’s room 1, maybe make the window a bit smaller/different so that the bed does not partly stand in front of the window.
I would probably have the house entrance door open the other way; in the guest WC, check if the sink actually fits with the size in relation to the door, because it is often somewhat carelessly drawn, which unnecessarily becomes expensive in implementation.
I would have left out the hook in the hallway that continues into the living room. I would definitely have a second shower in the house for three people, especially once the children no longer play with Lego, you will notice that. One needs longer in the bathroom oneself, and the habits of children in this regard are unpredictable; also, this is a room for privacy and children aged 14 and older don’t want that differently anymore. You have so much space, I would never save on that because it’s hardly fixable afterwards.
The detached carport from the house is good; in my opinion, a continuously dry walkway to the house is not necessary, what matters is that the house is right inside.
If you don’t like the hallway yet, check the need for cabinets. Maybe high cabinets can stand at the front by the entrance and then half-high ones, and thus the wall piece inside the living area could also be half-height, used as a key holder, phone area, etc., allowing a freer view.
Overall, it fits quite well, but I would still let some things go again to find solutions for the remaining open issues, for example, I wouldn’t build a hallway I don’t like; there is still room for improvement.
I have talked a lot and now see the nice idea from .
My first impression: Now there is finally space, also at the entrance, and the tip about the measured, real furniture always applies. That is very important!