I have torn down a "wall" that extended about 60 cm from the ceiling. As you can see in the pictures, I'm not quite sure how to finish this off nicely.
The pipe/hose will be removed, so it doesn't need to be considered.
Does anyone have any suggestions?
I would probably level everything out and then put a board on the short side all the way up to the ceiling. And then a smooth trim over the seam against the wall, so you don't need to patch up either.