Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Dunoon (50% of total searches to Cowal). The next most popular destinations are Gourock (25%) and Isle of Bute (17%). Searches for hotels in Arrochar (8%) are also popular.
KAYAK users have found double rooms in Cowal for as cheap as $106 (Dunoon) in the last 3 days. The average price is $190.