Also keep in mind: a sliding door needs a wall to slide into ... nothing else is allowed inside that wall, for example, in our case, the ventilation and the chimney were in the way ...
I don't like that the bedroom is a walk-through room.
What do you mean by walk-through room? For me, it is rather the room for me and my wife. I only go to the bathroom when I get ready, which is usually when I get up in the morning or go to bed at night. When I get up in the morning, I get ready in the bathroom and then go downstairs where I drink my coffee.
Or what solution do you have?
PS: the wall in the dressing room will be extended up to the window