I’m not quite sure why I haven’t blogged about this yet, but better late than never. If you make a booking through this link with Hilton by August 17, you’ll get a second night free for stays between June 26 and August 31. If you stay more than two nights they just reduce your rate by 50%. Not all hotels are participating and the rates are non-refundable. For the searches I’ve done it doesn’t actually come out to 50% off, but it’s pretty close.
(Tip of the hat to Kent)