What should I put here?

My wife and I just bought a fixer upper built in 1952. Unfortunately the previous owners really neglected it and the house is in worse shape than we had hoped.

We started ripping out some nasty walls and found this beautiful wood paneling in the dining area and really cool exposed brick in the primary suite (primary was originally a carport that got sealed in).

I’m thinking about just building a shelf for Knick knacks in this gap in the dining room, but what should I do with the big square in the brick wall? I’m guessing it was originally a window. The bed will go against that wall so some of it will be covered up.

Any ideas will be helpful!