A round or square end table big enough to provide useful space for both sofa and loveseat would work, with a large lamp. I have a couple of live plants under a similar mini-split ac unit and also near hear registers and they don’t seem bothered as long as i don’t let them dry out. Some pillows that pull the color from the very pretty rug would be nice, maybe the pink? Or green? Drapery panels can often make the difference between a comfortable room and a cozy room that feels finished IMO. You might want to check out curtains in linen or cotton from Ikea or Target, they’re quite inexpensive and look decent for the money. Mount the rods near the ceiling molding and have the drape just barely touch the floor. You may have to shorten, they make iron on tape that make it easy to hem without needing to sew. A cream color would look nice with your gold-beige walls. Mount the rods wide enough to push the drapes back off the glass for maximum light and views when they’re open. You may never need to close them as you have blind for light and privacy control. hope this helps.

I feel like this is a family room type look. But you can use as dining room if that works better for you Many will ask for more pictures and a floor plan. So if you can post those. But I guess to answer your question, if you do end up using this as a dining room: There’s not much room for much so a rug, table, chairs, maybe a bench on one side, what’s your style? Maybe wallpaper on the walls.

Since this dining area is right next to the kitchen, maybe a different type of window covering would be better than drapes. Roman shades would give you an opportunity to add color and pattern. Or you can buy drapes that aren't a solid color. Do you have issues with privacy or light control in this room? I like the round table. It seems like you could go up a size and have four chairs but then you would need a larger rug. A rug is another way to add pattern and color. A lot of different colors go with black and white, so bring home some samples or buy items you can return if necessary and see what you like. Do you use colors in adjacent rooms that you could bring in to this space?

Light Silver Sage belongs to the Blue-Green hue family. Technically a complementary color would be a color directly across from BG (blue-Green) on the color wheel. In Light Silver Sage's case that's the 'warm' side of the Red hue family. For example. want something more saturated and brighte. Everything I look at is to blue or green. Depends on what you mean by more saturated and brighter - because that statement kind of contradicts "too blue or green". Let me explain why I'm asking. Saturated usually means more Chroma, colorfulness. So more saturated is saying you want something bolder, more colorful and not as neutral as Light Silver Sage. Brighter or brightness is technically about lightness. So if you want something brighter than Light Silver Sage, it's going to have a higher Value and look lighter.