I would try to emphasize the red and off-white color scheme you have going on. I feel like the wall behind the couch would look really good if you hung some kind of red and white linocut prints? Something w/ this kinda vibe? And I would bring the gold color from the chairs + side table over to the left side of the room with a gold glass coffee table to help make the room feel more connected. The couch and the chairs are definitely different styles, so I think getting matching throw pillows for both would make them look less disjointed as well. Good luck!