Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Puerto Iguazú (96% of total searches to Misiones). The next most popular destinations are Posadas (3%) and Puerto Rico (1%). Searches for hotels in Eldorado (0%) are also popular.
KAYAK users have found double rooms in Misiones for as cheap as $14 (Posadas) in the last 3 days. The average price is $52.