I’ve stayed in Estoril Eden for 3 nights, unfortunately in December with a cold weather, and without any chance of enjoy the beach in front of the hotel. The hotel is a good choice if you want a very comfortable place to stay and don’t want to pay the price of Lisbon’s centre hotels. A few minutes walk you has the train station of Cascais where you can caught one of the many trains that comes to Lisbon, to “Cais do Sodre” right in the Down town. I really recommend this hotel.