Qantas Hotels is giving 10% off when you book using Qantas Frequent Flyer points by 23 October 2016.
Discount appears to be off the points value and not the cash price of hotels.
A pop up window opens up at the bottom of the page when searching for hotels worldwide. Can't find T&C's.
I made a booking using points (which allowed for cancellations) a week ago and had it cancelled for free over the phone this afternoon. I have now rebooked with the added discount and it works fine.
To get the MOST value from Qantas Points, only use them for flight upgrades.