A rug in the living room should ground the seating area.  It tells everyone that THIS is where the conversation is, and this is where the focal point of the room is.  Think of your rug as a piece of art.   Since this is the foundation of great design, it is important to buy a quality hand knotted rug that is design to last.   The Mission Motif leans towards the Arts & Crafts design which is displayed here with the Chrysanthemum rug.