Accor sale starts today with up to 50% participating hotels woldwide. For Australian hotels, 50% off is for Accorplus members (paid membership) 40% off for le club members (free membership). As with all Accor sales it's 50% off the flexible or best unrestricted rate and a 2 night minimum stay required.
This is valid for stays from the 1st March until 30 June for Australian bookings. There are different discounts and stay dates depending on the region. Too many to list- see terms and conditions in the link. List of participating hotels also available in the link.
Valid until the 19th January but as rooms sell out it is best to book early.
Unfortunately no cashrewards cashback for le club members.