I don't know what your design theme is for your home so it's kinda hard but I'll give it a shot.
You do have an arched doorway that you might want to play off of. Maybe a framed picture or even a stained glass window. Something like a tall rectangle. Even just a frame that you could use wallpaper behind.
or think about lining up several framed photo's.
Lots of choices with that area and it really depends on what your tastes are. I'd make it an eye catcher, make it POP and add
to the rest of the room.
Just my 2¢