Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Oeiras (40% of total searches to Costa do Estoril). The next most popular destinations are Estoril (40%) and Cascais (20%).
KAYAK users have found double rooms in Costa do Estoril for as cheap as 53 ﷼ (Cascais) in the last 3 days. The average price is 882 ﷼.