8/12/2016 @ 3:21 PM - The Park Hyatt in Midtown's luxury tower One57 is one of more than 30 New York City hotels currently for sale, sources say, in what could become a litmus test for the weakening hospitality market. Jeffrey Davis, who heads JLL's New York hospitality division, called the number of hotels on the market 'unprecedented.' The spike comes as observers stress about...