Get a third night free when you book a two-night stay at a W Hotel with an American Express card by December 31. Why not stay by the lakeshore in Chicago? Check out the cutting-edge design hotel in downtown Seattle? Sip a cocktail at the W San Francisco’s XYZ bar? Book a stay at any of the five urban oases in Manhattan? (Indulge in an in-room massage while you’re at it.) The choice is yours at this exciting collection of boutique design hotels. Click here for a full list of participating hotels.