If you prefer the rug be placed in front of the couch, Malene says it should run the same width (or a little longer) than the couch. For a more interesting look, she says, "try placing the rug at an angle. It should anchor the room but not overpower or underwhelm."

A large bathroom is the perfect place to fit a round rug. It's also a good place to experiment with colors, textures and patterns, Malene says. "If you choose color — for any room — the more the better, because that will inspire the rest of your decor."

Sigal Sasson of RUG-ART agrees. "Bold patterns (large flowers, abstract designs, lots of layers or color) on a small rug can make the room look larger," she says. But if you plan to place furniture on it, avoid covering up the design, "So no medallions in the center. You want to be able to see the design from all angles," she adds.