Members of Starwood Hotels and Resorts Preferred Guest (SPG) programme can double or triple their Starpoints for each stay at any of the group's nine hotel brands worldwide.
"Every Night Counts", which applies to stays from now until December 15, 2010, allows guests booked up to nine nights to double their earned Starpoints, while those booked for 10 or more nights will earn triple points. A "stay" begins at check-in and ends at check-out.
Participating brands include the Sheraton, The Westin, W Hotels, St Regis, Le Meridien, The Luxury Collection, Aloft, Four Points by Sheraton and Element by Westin.
SPG members should register for the promotion before October 31 to be eligible for the deal. To register, click here.
Non members can join SPG, which incurs no cost, by clicking here.