Starwood Hotels and Resorts Worldwide Inc's 2011 annual report showed that 61 percent of the hotels that company has planned will be built in the Asia-Pacific region; China alone will be home to 44 percent of them.

Last year, 28 percent of the company's management fees came from the Asia-Pacific region and 33.8 percent from the US.

Hoteliers said the biggest players in their industry will continue to try to establish themselves with the use of various brands designed for different markets.

"Different sections of Shanghai require different types of hotels," said Gerd Knaust, general manager of Hilton Shanghai, the first international hotel in the city. "In commercial areas we could have Hilton or Doubletree. In a high-end area like the Bund, we could have Conrad or Waldorf Astoria. The mainstream will always go to the Hilton brand."

Another reason for the expansion has been local governments' eagerness both to make their jurisdictions more attractive and to increase property prices.

Phoenix Island, a man-made island resort in Sanya, is the construction site for a yacht marina and a hotel similar to the Burj Al Arab in Dubai, the fourth-tallest hotel in the world. The cost of the hotel property began at 18,000 yuan ($2,800) a square meter in January 2010 and is now 80,000 yuan a square meter.

Zhao Huanyan, chief knowledge officer for Hotelsolution Consulting, a Shenzhen-based company that looks at the hotel industry, says developers that are building luxury hotels aren't out solely to make a profit.

"Sometimes they build high-end hotels to increase the price of the office buildings and residences in the same project," he said. "And sometimes they are required by the local government to build those hotels to burnish the city's image. In this case, even if the hotel performs poorly, it can be compensated by profits from the sale and rental of office buildings and residences."

Local governments, which often see five-star hotels as signifying their cities' increasing international appeal, also have good reason to encourage property developers to build hotels and attract international hotel chains as operators of those properties.

At the end of 2011, InterContinental Shanghai Puxi was recognized by Chinese authorities as being a national five-star hotel. There were then 53 five-star hotels in Shanghai, the fourth-greatest concentration in China.

Chengdu, the provincial capital of Southwest China's Sichuan province, now has 12 five-star hotels and will have 35 five-star hotels in the next four years, according to CBRE Group Inc, the largest commercial real-estate services firm in the world.

Changzhou, a medium-sized city about 200 km from Shanghai, has 10 five-star hotels; another nine will be added to that total by the end of this year.

China Hotel Market Outlook 2011, a survey conducted by the hotel investment-services firm Jones Lang LaSalle Hotels, said increases in energy, operating and labor costs, rising inflation, lower occupancy rates resulting from the increasing number of hotels and frequent staff turnover are the biggest difficulties that hotels in China are faced with.

The survey looked at 266 hotels in China, almost half of which were five-star hotels and more than 34 percent of which had four stars.

Jones Lang LaSalle Hotels said the increasing prices of utilities have made operating costs the biggest subject of concern for hotels.

Hoteliers often try to cope with such pressures by trying to balance the cost increases with revenue increases. Some time usually must elapse, though, from when room rates increase to when customers accept the new prices.

The survey's results further indicated that the current concerns about occupancy rates are greater than those about room rates. If the demand for lodging does not increase along with the supply, the increasing number of hotels will lead to a decline in occupancy rates.

Cooper said hotel companies will have great trouble hiring workers in the next decade.

"The famous hotel brands can easily find good locations for their new hotels in smaller cities, rather than in big cities," he said. "But there will not be enough young people coming into the labor market. It is also hard in smaller cities to find employees who speak English, which is the language that foreign brands do business in."

Some industry observers also say China has too many hotels.

"Comparing the hotel occupancy rate in China with that of other countries shows that there is a potential oversupply of hotels rooms in China," Zhao said.

Zhao said the hotel-occupancy rate was about 75 percent in Amsterdam, Berlin, Hamburg, Munich and Paris in 2011. The occupancy in London was about 85 percent.

In comparison, the average occupancy for five-, four- and three-star hotels in China in 2011 was slightly more than 60 percent.

Wei Xiaoan, an expert in the economics of tourism with the China Tourism Academy, said at the 2011 Asia Hotel Forum that bubbles have started to appear in China's hotel industry.

"There is an oversupply of business hotels in the cities, but themed hotels, resorts and budget hotels hold good opportunities for investors," he said.

Contact the writers at yangyijun@chinadaily.com.cn and wangwen@chinadaily.com.cn