Phew, a balcony to dry clothes sounds like an expensive thing. I find a balcony in a house quite pointless, since in 99% of cases people use the terrace anyway. I'm also out on this topic because with us, due to pollen allergies, laundry is only hung indoors anyway.
Where do your "American" wishes come from? You often see the TV hanging above the fireplace there. I always wonder how the device tolerates the heat. Usually, that's why it hangs way too high to watch TV comfortably.
I would remove the shower on the ground floor. You have planned 2 upstairs, who would still use that one?