In a semi-detached house, it is very unusual to place the staircase and the pantry on the side where windows can be installed. And to position the dining area practically without windows. I would swap that and possibly relocate the entrance.
I also find the kitchen and dining area tiny in relation to the living room. I would remove the reading corner; you should be glad that the neighbor’s house wall makes your terrace a protected place. It is much more pleasant than if the neighbors sat right next to you with their terrace. Better to have a flower bed along the neighbor’s wall with nice tall plants and that’s it. As it is now, you only have your own white bay window wall that you look at from the terrace.
We’re not supposed to ask: But what is the drying room upstairs for if you have a laundry chute and the washing machine is in the basement? That would be the ideal place for a dressing room with a window, the current one is too small. The bedroom is a dark, stuffy cave with the tiny window around the corner in the bay. And what’s left of the bathroom… no comment. The children’s room could also have a window UNDER the roof instead of a skylight. You have almost 2 meters knee wall, so there is an alternative: these Cabrio windows, i.e., vertical windows that transition into a roof window – two of those and you have a wonderfully bright bedroom with lots of light and air.
For the children’s room, I would move the door to the left or right so that the room can be divided in the middle if necessary and each half would have its own access (resale or unplanned offspring).
Regarding the atrium: that only makes sense if there is a window up there. Otherwise, you’re staring at a wall almost 6 meters high! And the atrium is not even centered above the dining table, which looks odd.
So overall, better to plan again (possibly mirror the house), with the utility rooms on the windowless side and the living areas on the window side. Then the atrium above the dining table also makes sense.
By the way, where is south actually?