Super Discount Mattress Warehouse in downtown Murrieta is located on Madison Avenue, behind FanDiego and the IHOP. It is a family-run shop that specializes in name-brand mattresses at low prices. It primarily carries Simmons, Stress-O-Pedic and G.M.C. mattresses and offer same-day delivery on purchases. Check out its website for current special deals and tips on picking out the right mattress for your needs.