I saw this blurb in a travel newsletter.  Thought it would be good to share.

Sofitel San Francisco: Blink and You'll Miss the $99 Rate
If you need a room at or around San Francisco Airport early next month, consider the Sofitel San Francisco Bay. It's offering a $99 a night Friends and Family rate, but only if you stay between April 1 and April 8. The online deal isn't even mentioned on the Sofitel.com Web site. You'll need to enter the code SOFREND when you make a reservation.