I find the floor plan solid. It will be quite a monstrous box. The basement has many rooms, which makes you wonder if all of them are necessary. But if you can afford it, of course, it’s pleasant. WC in the basement then with a lifting unit? Is that even needed down there? The terrain layout is unfortunately not entirely clear. Is the terrace at the kitchen with access to the garden or is it a complete balcony?
I find the hints Kerstin (kbt09) gave about the windows important, so that you can place cabinets.
What makes me a bit uneasy is the relatively narrow living area because of the double door to the living room. Maybe just one door? The TV is already placed in front of the window out of desperation because the area is too narrow. I only find the fireplace as a room divider disturbing. But that is a matter of taste. If one knew where and how the garden, south, etc. is now, I would probably swap the kitchen with the office to create a nicer and cozier chill area. But for that, a site plan is needed.