Good deal if you are looking to book accomodation anyway - check prices before clicking through cashrewards to confirm the prices are not getting jacked automatically.
Uncapped cashback so you can lock in any year end holidays if you were already planning. Mine got tracked almost instantly and it was uncapped.
On email it said CR rate is valid until midnight of 15/05/2023, but nothing mentioned on CR page linked.
Edit: it says "for stays until 28th September" but I'm not sure that is for CR or Gateway deals. Mine was for December/January and it got tracked. The confirmation email also says the amount of cashback you would get.
Always check prices in an incognito window separately.
I've had 1-2% INCREASES using cash backs and vouchers and you can lose the built-in cashback offers from booking.com app as well