Rowe Furniture has very clean line sofas that I think would be an appropriate scale for this room. LOVE the red feature wall. You do need to bring the red into the room but knowing how you want the room to feel can help determine a color palette. If you want the room to have energy and "pop", try a split-complementary or triadic color scheme. If you want it to be more relaxed and harmonious, I would suggest an analogous color scheme.

I Would Say you have a nice airy, ventilated and well lighted room.. Absolutely why natural light to severe needed for any home. Aahan what you are thinking is absolutely right that having a modern couch can make this room look completely different. also try changing the room colour make it light which will give you the much needed change... fresh... and elegant look....use white or ivory. Something like the photo shown below.. or also refer to our work which we have put up on houzzz...

I see the beige color still quite popular.. another thought is may be i can get my beige sofa nicely cleaned by a professional cleaner and change the cushion covers with some pop up colors...tht shud give a nice makeover.. suggestions?

If your living room on a separate area so you can place a furniture in 2 ways ( 1st is Modern sofa & Table ) 2nd is Traditional Look Sofa & table & If your living room is near by kitchen or a Hall type area you can place sofa set with table & Dining table for 6 people's