Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Ottawa (94% of total searches to Ottawa River). The next most popular destinations are Hawkesbury (3%) and Gatineau (1%). Searches for hotels in Vaudreuil-Dorion (1%) are also popular.
KAYAK users have found double rooms in Ottawa River for as cheap as $38 (Ottawa) in the last 3 days. The average price is $253.