I like the floor plan. Except for two small things: the bathroom upstairs and the limited continuous workspace in the kitchen. I think with the narrow bathroom, you would get a better result with a rectangular bathtub. I also usually find the partition walls in front of the toilet totally unnecessary. The same applies here. Who and why would you want to hide yourself or the toilet there? btw, there are quite stylish toilets... In the kitchen, I would plan a single row + island instead of the U-shape with the sink. This way, you can use full-size drawers from two sides with plenty of storage space and you get 60cm more continuous workspace on the island.