I also think it's very good, but I have some respect about ending up with too little storage space. Besides, it is always a bit difficult to break away from familiar patterns, but that's what I'm here for.
Storage space mainly arises from floor space for large cabinets. It is usually bad to plan many small rooms and niches where only mini-cabinets can stand. Such "small rooms" and the areas are then lost for other uses. An 8sqm office is okay, but as a bedroom it is rather unsuitable. On the other hand, in a 12sqm room you can put a bed
and a wardrobe where bedding can then be stored. A 1m wide toilet has no shower. That would be important to me with 4 people. In your place, I would pay attention to that as well. For the fact that you want the sun in the kitchen, the window on the right side of the plan is quite small - I would add quite a bit there. The dimensions for the cabin are also really awkward. It almost never fits somehow
not. Therefore, I had added the 60cm depth in the middle of the house for the kitchen cabinets to the open space. Of course, it is not as bright there as directly by the window. But if the terrace doors are properly tall and wide, it is not dark either. From that point of view, I found it okay. Such a narrow living room would have been too tiny for me - but that is of course a question of personal priorities.