Hotel rates have decreased globally in every market except for Abu Dhabi, leaving favorable negotiating conditions for corporate travel buyers, according to Hogg Robinson Group's 2009 Six-Month Hotel Survey.

"The latest figures suggest that the industry has some way to go before rates stabilize," HRG director of global hotel relations Margaret Bowler said in a statement. "With all key global cities recording rate declines in both quarters, London was the only city where decline slowed marginally."

Moscow still remained the most expensive city in the world for hotels, though by a much lesser margin due to its rate decline of 10 percent in local currency and Abu Dhabi's increase. Dubai and New York, meanwhile, both saw decreases of 24 percent in local currency, and Milan, Geneva and Hong Kong all declined between 16 percent and 18 percent.

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