I’m slightly late on mentioning this. But Starwood Preferred Guest members who stay for three nights at any Starwood Hotels between 1st May and 31st July 2010 can get a free Weekend Night Award which can be redeemed up till 19th December 2010. This is actually a great deal because:

There’s no limit to the number of Free Weekend Night Awards you can earn.

You could redeem your awards any Friday, Saturday or Sunday* night with no blackouts at more than 920 Category 1–6 SPG properties worldwide across all nine brands, including W®, St. Regis® and Sheraton®.

Best of all, you can even combine your awards and use them on the same weekend.

But before you go on booking your next Starwood room, you will first have to register your “SPG Free Weekends” here