I stayed this past week at the Sheraton Clayton Plaza in St Louis.
I noticed they they gave me Double points for my stays. This Hotel just became a Sheraton in august, so this might be a "New Sheraton" bonus promo. I did see something earlier this year about new hotels offering double points. The Clayton Plaza wasn't listed as one offering the double points.
I was a nice extra bonus.
I checked the web site and the hotel was not listed under promotions.