Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Toronto (83% of total searches to Lake Ontario). The next most popular destinations are Mississauga (8%) and Kingston (5%). Searches for hotels in Niagara-on-the-Lake (5%) are also popular.
KAYAK users have found double rooms in Lake Ontario for as cheap as C$ 57 (Ajax) in the last 3 days. The average price is C$ 282.
In the last 72 hours, users have found Lake Ontario hotels for this weekend for as low as C$ 90 (Hamilton) per night. Users have also found 3-star hotels from C$ 138 (Hamilton) and 4-star+ hotels from C$ 176 (Mississauga).