My list is relatively short (20 properties) but some I've stayed at numerous times. My Hyatt stays have been largely for personal travel over the past two years.
Summerfield Suites
Hartford - North Windsor, CT
Hyatt Place
Milford, CT
Madison, WI
Milwaukee, WI - Airport
Milwaukee, WI - West
Hyatt
Philadelphia - The Bellevue
Fairfax at Fair Lakes (VA)
Santa Barbara, CA
Carmel Highlands
Hyatt Regency
Washington on Capitol Hill
Crystal City at Reagan National Airport
Palm Springs, CA
Fort Lauderdale - Pier 66
Milwaukee, WI
Grand Hyatt
Washington, DC
New York - 42nd Street
San Francisco - Union Square
Melbourne, AU
Andaz
New York - Fifth Avenue
Park Hyatt
Paris - Place Vendome