“A total of 1,453 hotels are ready to accommodate visitors. All the hotels set to accommodate tourists and the World Cup visitors have been classified and have confirmed the quality of their service,” the mayor's office said in a statement published on its official website.

Head of Moscow’s Department of Sport and Tourism Nikolay Gulyaev said that only those hotels that had been classified could work legally.

“We are expecting the arrival of about 800,000 to one million fans, including about 400,000 foreigners… [Hotel] rating is needed in order to assess the level of comfort of each hotel according to the uniform federal criteria,” Gulyaev said as quoted by the website.

He added that the department was constantly monitoring the hotels’ activity to prevent them from adding extra stars to their ratings.

Russia will host its first-ever FIFA World Cup from June 14 to July 15 at 12 arenas across 11 cities.

Moscow's 81,000-seater Luzhniki Stadium will host seven World Cup games, including the opening match and the final, while five more matches will be held at the 45,000-seater Spartak Stadium.