What is supposed to reach the top of this strange niche as light?
If you put a proper closet here on the left side of the plan:
which then extends around the corner at the bottom of the plan into a sideboard, the hallway will look good, bedding and towels can also be stored more hallway-oriented for everyone instead of in your bedroom, and the hallway will actually get light.
Is it already built? In the bedroom, you could make the window on the right side of the plan narrower ... or omit it and instead put a wider window at the bottom of the plan.
Because with a mattress width of 200 cm, there is only about 50 cm left on the right and left for the box spring bed (310 cm is the rough construction measure). As soon as a bed frame is added, it really gets tight. And making the bed there is no fun.