GHA (Global Hotel Alliance) has their April flash sale going on for three days. You can get up to 40% discount off of the Best Available Rates for stays until the end of December, 2014 (dates vary by property).
Note that these rates are prepaid, non-refundable and non-cancelable.
This sale is going on for three days and is likely to end on April 30, 2014. There are no terms and conditions associated with this offer, but you can access GHA’s web page for this offer here.
If you managed to get the GHA Discovery Platinum status during one of the limited time offers, it could be worthwhile to have a look at this sale and the rates that are currently offered by the properties. You may be able to save some.