You can get a complimentary third, fourth or fifth night when you book two, three or four consecutive nights at participating Preferred Hotel Group properties when you pay with any American Express Card through Dec. 31, 2014.

The free night offer varies by the property you choose. The qualifying stay must be booked on a Preferred Hotel Group brand website or by calling (866) 990-9491 and mentioning American Express Complimentary Night and using promotion code MKTSMS14. Visit http://insideflyerus.wpengine.com/link/?11709 to learn more.

Bottom line: There are over 318 participating hotels and your nightly rate is pre-discounted by 33 percent of the cost of the third night, 25 percent of the cost of the fourth night, or 20 percent off the fifth night as a discount off the daily rate when booking. Blackout dates may apply and the offer is subject to availability.