Interesting article on BBC:
Rio de Janeiro's World Cup and Olympic hostels boom
With Brazil's own tourist board recently bemoaning the fact that Rio has the third most expensive hotel rooms in the world, getting a bed for the night in the city has never typically been wallet-friendly.
...Today official figures show that Rio has 72 hostels, used by both foreign tourists and travellers from across Brazil. And the number of hostels in the city is continuing to grow quickly as the World Cup and Olympics get closer.