There is another Master card offer that I found from the offers link on the above page
Dream Getaway | Resort Offer | Le Club AccorHotels & Mastercard®
This offers 33% off a 3 day stay at an Asia Pacific MyResort property which ties in well with the 4 x points offer for these hotels
The Ts+Cs say : (b) This “Mastercard® Dream Getaway 33% Off” promotion must be accessed via the Mastercard and AccorHotels Partner Rewards website at
Membership and partner reward offers | Le Club AccorHotels & Mastercard®
which would seem to preclude going through a Cashback portal but I can get the promo rate by inserting the code MCAP02 in the Preferential Rate box in the Special rates drop-down on the normal booking page so Cashback sites should work
As an example this promo gave me a 3 night rate of $92/n compared to $112/n as my next best AccorPlus rate at the Mercure Gold Coast