Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Manaus (88% of total searches to Amazon Rainforest). The next most popular destinations are Porto Velho (5%) and Leticia (5%). Searches for hotels in Santarém (2%) are also popular.
KAYAK users have found double rooms in Amazon Rainforest for as cheap as £8 (Manaus) in the last 3 days. The average price is £41.