This might work. I have a concept rendering with a sofa and round ottoman or coffee table, a side chair with side table, a TV at an angle over the fireplace, an oval Dining table, two dining chairs and banquet, two barstools, a round rug and a tall houseplant.

The drawing is not to scale, I did not measure the pieces.

Here is a rectangular rug. The armchair could be a swivel to face the FP, the window, or the room. Barstools with backrests and footrests are comfortable for overflow seating. The banquette could be extened for additionaal seating. Add another small chair in the corner between the windows.