Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Puerto Iguazú (65% of total searches to Iguaçu National Park). The next most popular destination is Foz do Iguaçu (35%).
KAYAK users have found double rooms in Iguaçu National Park for as cheap as $15 (Foz do Iguaçu) in the last 3 days. The average price is $114.
In the last 72 hours, users have found Iguaçu National Park hotels for tonight for as low as $18 (Foz do Iguaçu). Users have also found 3-star hotels from $21 (Puerto Iguazú) and 4-star+ hotels from $63 (Foz do Iguaçu).