The I Prefer loyalty program is celebrating its third anniversary by offering members a free third night on three-night stays through March 31, 2010. I Prefer is the loyalty program of Preferred Hotel Group, which includes Preferred Hotels & Resorts, Summit Hotels & Resorts, Preferred Boutique, Sterling Hotels and Historic Hotels of America. While the Preferred Hotel Group includes over 650 properties, the free third night offer is available at over 150 participating properties worldwide, including The Carlton in New York City, The Peabody Memphis, The Hempel in London and the Hotel Brunelleschi in Florence.

The third night free is only available for new online bookings made at IPrefer.com. The offer is subject to availability and valid for three-night stays only. The rate code MKT3YR will discount the three-night stay by 33 percent and confirmation will not reflect the free night. I Prefer members also receive a complimentary room upgrade when available, early check-in and late check-out, complimentary Internet access and other benefits.