With a doorway advent to it, a desk and chair might block the traffic pattern. A storage cabinet or base cabinet with shelves above may be better for the location.

I think it depends on your needs, not just to fill a space. Would your dog bed fit there with large art work above? Do you need more shelving? Then add an open shelving unit. Do you need a another cabinet in that area? Or, I see shiplap, Magnolia sells a metal hanging wall ladder that would fit the space for throw blankets. I looks like you just moved in, breath a minute before you fill all empty areas.

a bar.