Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Rio de Janeiro (75% of total searches to Atlantic Forest). The next most popular destinations are Puerto Iguazú (10%) and Sao Paulo (10%). Searches for hotels in Foz do Iguaçu (5%) are also popular.
KAYAK users have found double rooms in Atlantic Forest for as cheap as $10 (Maceió) in the last 3 days. The average price is $211.