From http://www.hyatt.com/hyatt/offers/index.jsp?accid=costco Enjoy 10% off the Hyatt Daily Rate plus your third night free at participating Hyatt Hotels & Resorts in the U.S., Canada and Caribbean from May 16, 2011, through September 6, 2011. Or choose Hyatt Place or Hyatt Summerfield Suites and take advantage of 10% off the Hyatt Daily Rate and an additional 50% off the third night. The free night or additional 50% discount will be deducted at checkout. Reserve now or call 877 849 2730 and request offer code COSTCO. Note that Park Hyatts are not included with this offer. You need to show membership card. Rate is not combinable with other promotions.