Less is more. The most important rule to remember when decorating any room is don't clutter. Less really is more. Choose simple pieces and keep the extras to a minimal. What decorations you do use don't over do it but rather select a few quality items.
If you are working with a large space and want to create different areas segment the room by using lounges and other large pieces of furniture as subtle divers.
Having rugs in your living room will make it warm and cozy. Without any depth or color all you see is bare floors and furniture. Rugs make the room look elegant with a touch of essence. No longer will you have to go into a drab looking room that doesn't have any color or sense of style.