Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cascais (76% of total searches to Costa do Estoril). The next most popular destinations are Estoril (16%) and Oeiras (5%). Searches for hotels in Carcavelos (4%) are also popular.
KAYAK users have found double rooms in Costa do Estoril for as cheap as £15 (Cascais) in the last 3 days. The average price is £183.