The washing machine on the upper floor (does it really fit in the small room?) also needs to be drained. I would have the concept explained to me first before additional boxed-in areas are planned during the shell construction.
I also really like the entrance! Personally, I wouldn’t install a shower on the ground floor if there is no other room there (you only have living/dining down there, no guest room or anything similar). This shower will have to be cleaned later, but will never be used (and costs money upfront). But it could be different for you...
I think on the upper floor, the bedroom and bathroom could also be swapped. The orientation wouldn’t change much, and the drainage would be simpler. The children’s rooms are of course nice.
I also see the question of furnishing the living room; you just have to try a few things out (cut out existing furniture to scale and move it around on the printed plan).
The reference to a coffee grinder is unmistakable
Coffee grinders are square?!