Much has already been said. Here comes more:
-Access to the shower is too narrow.
-The bathtub in original size also didn’t fit, so it probably had to shrink.
-The wardrobe in the children’s room can only be opened from the bed, if at all.
-Should the storage space on the ground floor be a pantry or the utility room? Too big for a pantry and in the wrong place for a utility room.
-Dressing room difficult to furnish (if it can be used at all due to the sloping roof).
But the staircase is the be-all and end-all. That’s where the floor plan falls apart for the first time.