Just announced on Flyertalk today:
IFast Ways to Free Stays
Earn double points for each stay or one free night certificate after 10 nights within the promotion dates of April 6 – June 30.
HHonors members must register for the promo.
Hotels are opted in by default.
There is also a pile of airline promos coming out which hotels have to opt -in to.
This will be a tough one. It took me almost 2 months to get 10 nights for 1 free stay this quarter, but I mainly stay in hotels that cost less than $150/night so double points doesn’t mean much with that. If the free night can be used for higher level properties then I know 1 free night is worth over 30,000 points and it is unlikely I can do better than that with many stays.