Attic floor plan in the existing building

Since the post can apparently no longer be edited.

One more addition: we do not want any "structural" changes to the roof, such as dormers or similar, but simply want to design the interior.

I would rotate
Bathroom to the wastewater
Dressing room and sleeping area towards the gable, but do not take the dressing room as a trapped space, rather the bedroom. Remove 2 doors to the bathroom. It only creates embarrassing situations

You can't make sense of that. Hip roof and then windows in the wall after all?

Post some photos from the outside.

Swap bedroom and dressing room. The bedroom has no window.

Please align all floor plans the same way. Take pictures vertically. Measure all positions - of course also purlins and chimneys in the middle of the room, as well as windows, other protrusions, etc. Mark where sanitary connections would be possible. This way it is torture.

Is there no plan of the bungalow?