Only average daily rate grew, though by just 0.6 percent to $131.93. "The second month this year with a negative result points to a continued slowdown for the U.S. hotel industry," said STR SVP of lodging insights Jan Freitag.

"Demand only grew 1.2 percent, not strong enough to overcome a 2 percent increase in supply, so occupancy declined for the third time this year."