Deutsch bested Publicis Groupe's Saatchi Saatchi WPP Group's YR Advertising and M&C Saatchi, all New York, a Starwood spokeswoman said.
The review was launched in October, 2001.
Deutsch will handle worldwide creative advertising, including TV, print, direct and interactive for an account estimated between $20 and $30 million. Deutsch will also oversee all media plans for Westin and Sheraton's North America campaigns.
Starwood's previous agency on Westin and Sheraton was Omnicom's DDB Worldwide, New York.