Hilton has a 3-day flash sale going on for stays in EAME (Europe, Africa & Middle East) for weekend stays from October 11 to December 29, 2013.
Weekend is defined as Thursday, Friday and Saturday nights in the Middle East and Friday, Saturday and Sunday nights in Europe and Africa.
The discount offered during this sale varies from 15% to 33% off of the BAR (Best Available Rates). Note that this rate is prepaid, nonchangeable and nonrefundable. Only book it if your plans are firm.