Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.UPDATE: It looks like Amex pulled the coupon. I guess they didn’t want it to get out of control like the expedia.ca SAVE300 “deal”!WOW- Huge deals to be had here. TODAY ONLY- so book ASAP. http://leisure.americanexpress-travel.com/Promotions/0,,AMEX%7C6439%7Chotels_main,00.html?cmpid=sm-ctn-sm000210And you don’t even need to use an American Express card to book.Use promo code AMXHOTEL50 at check-out. Worked like a charm for me.I just booked the Four Seasons Dublin for $112 total for this Saturday (will make my semi-mileage run to Dublin that much more enjoyable).Enjoy![card card-name=‘The Platinum Card® from American Express’ card-id=‘22504813’ type=‘javascript’ bullet-id=‘1’]