Hotels in Rio de Janeiro will be enough to accommodate an expected 500,000 guests who will attend the Summer Olympics in the city next year, according to the Brazilian embassy in Beijing, China.

In a press release to mark the one-year countdown to arguably the biggest sports events in the world, the embassy on Tuesday said 70 hotels are currently under construction in Rio, which will add 36,800 rooms to the city's hotel capacity, increasing capacity from 2010 by 86 percent.

"Rio de Janeiro has long been a major tourism destination in Brazil that receives large volumes of tourists every year," said Maracelo Della Nina, deputy director of the Brazilian embassy in China. "It is highly experienced in holding large-scale events such as carnival and the New Year's countdown, when 2 million people congregate in the city. So there will be no problem for the city to deal with the sudden surge of visitors during the Olympics next year."

The Rio Olympics, to be held from August 5-21, will see 42 sports events with 10,903 athletes from 205 nations participating. It is expected to attract a global audience of more than 5 billion people.

"Most of the infrastructure construction for the event is right on schedule," said Monica Tambelli, media director of the Brazilian embassy to China. "Also, the infrastructure is constructed in such a way that it will continue to benefit people living in the city after the Olympics."

According to the embassy, for every $1 spent on Olympic equipment, $5 will be spent on legacy projects. The metro capacity will increase twofold from 2009 levels by the time 2016 rolls around.

The Barra Olympic Park, the main venue for the Olympics, is 86 percent complete. Other venues, such as the tennis center, the aquatics stadium and the training center, are more than 50 percent done.

Forty-four test events will take place in Rio from July 2015 to May 2016, involving 8,000 athletes.