Is this the upstairs landing? Instead of a hutch or bookcase why not a console and some art. Usually you want access to a bookcase and this appears to be in a hallway.

I would think about installing floating shelves. Check RH.

console with storage and some art -- avoids having attention brought to ceiling being infringed by the angled soffit. What kind depends on what you'd like to store in the area (just books?) I'd look for 2 pieces of art, slightly different sized or a round one

Is there enough room to make a reading nook with shelves?