In my opinion, the bay window in the dining room should be designed so that the dining table can be used exactly there; it looks less good otherwise. Even if, for reasons I don’t understand, there will be no chairs at the counter, someone will still end up standing/leant there. Anyway, the dining table should really stand freely and have space. I find it difficult with a bay window, especially here. If it were wide enough for the dining area to basically "disappear" inside, but as it is, it stands at the corner and I fear it will not have a comfortable place even after turning it. So either a bit wider or completely gone, or as already mentioned, the kitchen smaller or not as deep. I don’t see a suitable place for a fireplace with this furnishing, maybe if the living room were deeper on the bay window side, so then as a "room divider" between living room and dining room. I also think that window surfaces are missing; almost no light comes from the hallway. At the entrance to the office/guest room, I would try to get 60 cm as wardrobe space so that you don’t visually walk into the wardrobe side.
I would push the wall upstairs from the hallway to the dressing room further to the left, so that you can go from the dressing room into the bedroom and bathroom.
I see it the same way, here it is a small little room and an unnecessary door. You enter this dressing room and then stand in the small closed-off room; to me it looks more like a storage room and the door takes up additional space for placing furniture. The upstairs bathroom looks uninspired so far but surely there will be more ideas here or you might open a dedicated thread for it. The shower is really right in front of your nose at the moment. The roof terrace is huge and is only accessible from the children’s area. To prevent it from being just a huge area, something must be done so that it doesn’t look ugly and can also be used as a real, i.e. nice, roof terrace. Too much area can also be a disadvantage, then it looks like a walkable garage roof and not like a roof terrace.