Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Chicago (95% of total searches to Chicago River). The next most popular destinations are Rosemont (2%) and Orland Park (1%). Searches for hotels in Evanston (1%) are also popular.
KAYAK users have found double rooms in Chicago River for as cheap as $38 (Chicago) in the last 3 days. The average price is $565.