Accor Hotels has a global sale for 50% off hotel stays booked by November 25 for stays from December 11, 2011 through February 12, 2012. The discount is 50% for A|Club members and 40% if you are not a member. You can join A|Club and get the 50% discount when you book.
These rates are prepaid at time of booking, no changes allowed and no refunds for cancellation.
The good news is Accor Hotels provides a pdf link with participating hotels ordered geographically.
Accor Hotels is the largest global hotel chain outside the USA and the most comprehensive hotel chain for France and Europe. Brazil and North Africa are two other areas where Accor offers more hotels than any other major hotel chain for earning loyalty points with your travel. China, Indonesia and Thailand are other countries where you will find Accor properties outpace most other hotel chains.
Here is a Loyalty Traveler post from September 2011 where I give an overview of A|Club loyalty program and Accor Hotel brand descriptions. Since then Accor A|Club has added Orbis Hotels, a small brand in Poland.