Stay two nights at any participating W Hotel worldwide and you can get a third night free with the Night on Us promotion through Sept. 30, 2009. Most hotels offer this deal for arrivals Thursday through Saturday, except for the following hotels that allow any day arrivals: W Atlanta — Midtown, W Atlanta — Perimeter, W Chicago — City Center, W Chicago — Lakeshore, W Dallas — Victory, W Doha Hotel & Residences, W Hong Kong, W Istanbul, W Minneapolis — The Foshay, W Montreal, W New Orleans, W San Diego and W Seoul. Book online or call (877) 822-0000 and mention code Z3H or Z3R. You must complete the stay by Dec. 15, 2009 and the offer is only valid for a three-night minimum/maximum length of stay. Other restrictions may apply. Visit http://insideflyerus.wpengine.com/link/?1509