Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Rio de Janeiro (91% of total searches to Rio de Janeiro). The next most popular destinations are Cabo Frio (3%) and Petrópolis (3%). Searches for hotels in Búzios (3%) are also popular.
KAYAK users have found double rooms in Rio de Janeiro for as cheap as $10 (Cabo Frio) in the last 3 days. The average price is $187.