From now until 30 Apr 2018, book you next stay at participating Hilton properties to enjoy up to 25% off the Flexible Rate. This offer is only valid for stays from now until 31 Dec 2018.
Promotional prices are subject to availability at participating hotels, and blackout dates apply. You should be able to find pretty good options in for Australia, New Zealand, China, Japan, Korea, Maldives and Southeast Asia.
More information can be found here.