PKF expects rates to drop 10.2 percent for 2009 and by another 3.3 percent in 2010. The biggest discounting will happen this summer, when travel buyers traditionally negotiate the rates in their programs for the following year, said Mark Woodworth, president of PKF Hospitality Research.

Woodworth said in the report that 2009 would go down as the weakest year ever recorded for the U.S. lodging industry, and hoteliers should not expect to see a rebound in 2010. The decline escalations in revenue per available room, however, are nearing an end, he said.

"If you are wondering when we'll start to see actual growth in room rates and revenues, then you'll have to wait until 2011," Woodward said in a statement. "However, if you want to know when the operating environment is going to get a little less painful, that's happening right now."

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