The New York-based intermediary Joanne Davis is running the pitch and contacted shops with a brief earlier this month. Agencies were asked to answer initial questions by the middle of last week.
Sources said the winning shop would develop a campaign to promote JW Marriott, which operates more than 50 hotels globally, including 22 in the US and Grosvenor House on London’s Park Lane.
The review does not affect WPP’s MEC, which has overseen media for all of Marriott International’s brands since it beat ZenithOptimedia to the business in 2011.
Partners Andrews Aldridge won the pan-European ad account for Marriott International in 2012 after a competitive pitch.
In April, JW Marriott released an app, called CUR8, that allows guests to share videos of their favourite travel moments on social media. The Los Angeles agency Team One created and designed CUR8.
JW Marriott did not return requests for comment.