http://www.starwoodhotels.com/promotions/promo_home2.html?promoCode=ZSH

Get a great deal on togetherness. Book two consecutive nights at any participating Sheraton and we will take 20 % off our best available rate.

To enjoy moments on us:

* Arrive on a Thursday, Friday or Saturday for a 2-night stay
* Book anytime up to the first day of your stay

Seems like a good deal to me. I've been accumulating points and keeping an eye out on discounts. It's might be dead , but it might work.

Not the best deal.

Get a free night instead
Stay2 get 3rd night Free

Thanks OP!
Just used this deal for a 2 night stay in ONT! I was almost pulling the trigger on a reservation and this saved me abotu $20 bucks/night + taxes. I always like Starwood properties over the competition and this made it super.
For those who care it does seem to be a prepaid deal so read the T&C.