Paint the walls in the room a light tan color. This will soften the brightness of the couch and enhance any wood trim on the furniture.
Place an area rug in front of the couch that mimics the style of the couch. Look for a rug with faded red and brown tones in it to coordinate with the rustic look.
Place two side tables and a coffee table in the room. The wood tables should match the wood trim, if any, on the couch and should be in a deep brown tone to coordinate with the walls.
Place rustic themed or vintage looking throw pillows on the couch. Pillows don’t have to match each other, so you can mix pillow designs, sizes and materials to enhance the rustic seating.
Top the side tables and coffee table with rustic accessories, such as candles in a rustic candle holder, or a rustic box made out of wood with red accents.
Hang light cream or tan colored sheers on the windows. This will soften the harsh, hard lines of the wood furniture and mellow out the red color of the couch.
Hang art on the wall that resonates with the rustic look of the room. Look for an art print that incorporates rustic and red elements.