Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Iseo (25% of total searches to Lago d'Iseo). The next most popular destinations are Sarnico (25%) and Monte Isola (25%). Searches for hotels in Castro (25%) are also popular.
KAYAK users have found double rooms in Lago d'Iseo for as cheap as C$ 124 (Iseo) in the last 3 days. The average price is C$ 208.