Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Vinhais (36% of total searches to Tras-Os-Montes & Alto Douro). The next most popular destinations are Foz Tua (34%) and Outeiro (18%). Searches for hotels in Pinhao (11%) are also popular.
KAYAK users have found double rooms in Tras-Os-Montes & Alto Douro for as cheap as $27 (Vila Real) in the last 3 days. The average price is $99.