Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Toronto (79% of total searches to Lake Ontario). The next most popular destinations are Rochester (9%) and Mississauga (8%). Searches for hotels in Niagara-on-the-Lake (4%) are also popular.
KAYAK users have found double rooms in Lake Ontario for as cheap as $29 (Toronto) in the last 3 days. The average price is $252.
In the last 72 hours, users have found Lake Ontario hotels for this weekend for as low as $45 (Hamilton) per night. Users have also found 3-star hotels from $111 (Hamilton) and 4-star+ hotels from $124 (Mississauga).