The deal, which saw Airbnb pay an undisclosed amount to local Olympic organizers, means official Olympic sites will feature a link to Airbnb's site and encourage spectators traveling to Rio for the games to use the service to rent space in private homes and apartments.
This marked the first time the Olympics has had an alternative accommodations sponsor, said officials with the local organizing committee.
Rio's notoriously poor hotel infrastructure has been long been considered a critical issue. When the city won the Olympic bid in 2009, it had just half the 40,000 beds required for the games. Since then, new infrastructure has been built, and the city now has the 42,000 spots needed to house members of the "Olympic family," including athletes and their entourages, the media and sponsors.
"When we started all that (Olympic bidding process) several years ago, the major problem was hotels. How are we going to host so many people," Sidney Levy, CEO of the Rio 2016 organizing committee, said at a news conference.
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An initial plan to put people up aboard several cruise ships docked in waters off of downtown Rio fell largely flat, and the bankruptcy of Brazil's one-time richest man, Eike Batista, who was supposed to deliver restored hotels, only aggravated Rio's housing crunch.
Airbnb's chief product officer, Joe Gebbia, said Friday's deal would "make it possible for more people to attend Olympic games next year."
"We're ready for the expected 380,000 spectators who are coming to Rio for the Olympic games, and we're ready to show them what traditional, authentic Brazilian hospitality looks like," he said, adding that the sponsorship deal represented an "incredible opportunity for Rio residents to care for those visitors."