I just don't know

dining area

This space is the dining area - in your face when you walk in the front door. Drapery will hang from beneath that soffit. Those glass pieces not staying on the built-in buffet. Nope.

from library

Dining area is also open to the library, via glass doors.

oak soffit

 Drapery is sheer, white linen.

into library

That's the front door in the left of the shot - orange and glass.

I'd like to put some furniture in that dining space.

I just don't know what. Exactly.