Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cascais (52% of total searches to Sintra-Cascais Natural Park). The next most popular destinations are Sintra (43%) and Colares (4%). Searches for hotels in Alcabideche (1%) are also popular.
KAYAK users have found double rooms in Sintra-Cascais Natural Park for as cheap as C$ 70 (Sintra) in the last 3 days. The average price is C$ 298.