I took a look at it, our dressing room has a raw structural dimension of 2.38m and I could also do without 10cm in width, that would be okay, I would definitely do that in your position, because the space next to the bed would be too tight for me. I would add a door to the bedroom if you have teenagers who still watch action movies at night, you’ll be glad to have an extra door just for that reason alone. In the stairwell, I would of course position the window so that when standing on the landing you have a normally high parapet height, and then you can have the window higher towards the top, otherwise it gets much darker down in the hallway. In the small study you don’t necessarily need a double-wing window like that, I would rather install one that is 88.5cm wide, like the one in the dressing room, then you also have the same width twice. The seating area in the living room doesn’t get properly bright, especially when the sun isn’t shining. We have windows on two sides in the seating area; if I lower the shutter only on the window on one side, it already gets significantly darker, having no window at all would be too dark for me. I wouldn’t move the 3m window 80cm lower and then cover part of it with the sofa, that looks totally botched, as if you misplanned it. I’d rather make two smaller windows out of the large window and then place the sofa directly in front of them, alternatively maybe a narrow, long window above the sofa. Definitely, I would ensure more light; you might want to read something without artificial light sometimes. The kitchen is nice and large, but I would change the furnishing, there would be too little working space for me, I would rather plan an L-shape with a cooking island. I wouldn’t put the roof window on the front side of the house, it doesn’t look very nice.
Best regards
Sabine