Third-Party
Shopback have a 12% cashback on booking.com. There's nowhere in the email or their site that seems to indicate when this ends other than my extension which says that it ends in '1 Days' (sic).
Does 1 day mean midnight tonight or does it mean tomorrow night?
It's very hard to tell.
TIA.
Be very careful with this. When visiting travel sites using a cash back referral link they've been known to increase the prices shown. I'd try opening private browsing tab and comparing the price booking directly to confirm you are actually getting a real discount.