Our plan was to stay in Cascais city, but we're glad we ended up in Estoril instead. The beach is nicer and just 3 min walk. Cascais is 10 min with train and 30 min to Lisboa. The apartment is close to the train station but we never heard the train or the traffic. It's also close to the grocery store, the gym, and close to very good restaurants and bars. The apartment was very clean and practical. The service and communication was perfect! :)