Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Porto (96% of total searches to Douro). The next most popular destinations are Vila Nova de Gaia (2%) and Maia (Porto) (1%). Searches for hotels in Pinhao (1%) are also popular.
KAYAK users have found double rooms in Douro for as cheap as C$ 48 (Porto) in the last 3 days. The average price is C$ 226.