Same as this - triple cashback on hotel bookings @ booking.com via Cashrewards.
I compared a few prices with CR and without CR and they looked the same to me before cashback (no price jacking as reported previously)
But I only looked at a few places and dates, do your own research.
Hope this helps.
Copy paste from CR:
Important: Ensure "In Partnership with Cashrewards" or "Cashrewards" branding logo is displayed on each page of your booking. Your sale will not track and will not be attributed to Cashrewards if logo is not present. Your Booking.com confirmation email must also show this and claims will not be accepted if not present. Sample screenshots here & here.
Use of any Booking.com refer-a-friend links, or any coupons and/or incentive offers/links (including Amex/Mastercard/Visa discounts) will invalidate any cashback and/or any cashback claims, including our cashback guarantee, unless specifically listed on this site.
Your purchase amount will display in EUR in your My Rewards. Your cashback amount will be converted to AUD.
Cashback is eligible on accommodation bookings only. Car rentals, flights, and non-accommodation bookings are ineligible for cashback.
You must return and click through from Cashrewards every time you make a new booking/transaction/purchase.