Get a one-time statement credit by using your enrolled card to spend $50+ in one or more transactions at www.hotels.com by 2/28/2017.
This offer came out on January 30 through the American Express website.
To find out how to load this offer to your card(s) read this great guide: http://frequentmiler.boardingarea.com/complete-guide-amex-offers/
Make sure to read the sections that cover loading an offer on multiple cards if you have more than one AMEX card.
Why Hotels.com? You won't (most likely) get Elite Credit for this stay, so why?
Because sometimes it's the best deal (and with 1 free night after 10 nights stayed) it's good to have in your back pocket in case your chain(s) of choice don't have a great deal.
Also, it's 20% off which is hard to beat in any case.
For the record, I purchased two $50 gift cards. One with SPG AMEX and one with AMEX Platinum.