It isn't easy to transform a long, narrow living room into a cozy, relaxing space that your family can enjoy. If you don't plan your furniture and decor placement carefully, your living room could end up resembling a big, cluttered hallway. Fortunately, there are several things that you can do to create a warm, inviting space that fits all of your family's needs. Paint the Walls When you have a narrow, rectangular living room, you need to choose your wall paint wisely.