I suggest changing the layout of the furniture you have. The two blue chairs are in a very odd location looking at the wall. Im not sure if you have room to incorporate them into the sitting area wit the sofa? I would hang a rod above the windows and have the curtains go straight across instead of in line with the curve of the window.

Duplicate

I have to agree the blue chairs looking at a wall why. The curtains need to be straight across as before on a rod. You have some lovely things in the room but nothing flows together

Hard to say without knowing how you need the room to function and its context in relation to dining and kitchen. Could you provide a sketch of the layout with fixtures, windows, doors etc.? This would give a better sense of where furniture could be placed. Agree that the window coverings need to go straight across above the arches which would be fully revealed when the curtains are open.