Lina, like Mary Poppins, is practically perfect. She greeted us. Gave us keys and a tour of the apartment as well as the surrounding neighborhood. She left us fruit, snacks, wine and coffee which we were very grateful for as we arrived late in the day. When we had questions or problems she responded right away. She replaced our towels and bed linens during our ten day stay. She even provided us with a tabletop Christmas tree with lights!
The apartment is on the top floor which means you climb 49 marble steps but it also means the view is splendid. The train tracks are adjacent to the building but the suite is well insulated and the train noise is not bad at all and was not an issue to us - I thought most trains sounded like a typical central heating furnace starting up and then, six seconds later, it was gone. Speaking of heating; our stay was in the middle of winter and we were completely comfortable most days without heating. The one day we felt cold we used the provided space heater and it warmed the place up in no time.
It is easy to walk to the beach, the train station, and some nice shops and eateries. There is a path along the beach that you can take all the way to Cascais.
In December the sun set over the marina. The apartment is south facing and our laundry dried quickly on the lines outside the windows.
The bed was comfortable including the pull out sofa bed.