Cashback is ineligible on the following:
Car rentals, flights, and non-accommodation bookings
Use of any Booking.com refer-a-friend links, codes or any non-Cashrewards incentives (offers, links, newsletters, secret prices), unless stated as eligible on this site.
Travel that is not consumed
Items that are cancelled, returned, exchanged or refunded.
GST, other taxes and delivery fees.
Fraudulent transactions.
Purchases using any type of discount which lowers price advertised on the Merchant site, including but not limited to employee discounts, student discounts and price-matching.
Just saw it on cashrewards and booked a hotel, $20 bucks saved, job done