The best way to anchor a living room seating area is to use a properly sized rug that fits your furniture layout. For example, in a twelve by sixteen-foot room, a nine by twelve-foot rug centered under seating ties the space together and defines the zone. The rug should be large enough to hold the front legs of sofas and chairs, improving cohesion and flow. Anchoring your seating area makes any sofa size function effectively and improves visual balance.