Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cascais (50% of total searches to Sintra-Cascais Natural Park). The next most popular destination is Colares (50%).
KAYAK users have found double rooms in Sintra-Cascais Natural Park for as cheap as 247 ﷼ (Cascais) in the last 3 days. The average price is 756 ﷼.