It's a great apartment, big and welcoming. We loved it! It was 5 of us and we enjoyed the 3 real bedrooms. Helena answered fast, was flexible and helpful with nice travel tips. We cooked in the kitchen (bring paper towels), enjoyed our meals on the big table, chilled in the living room... A cleaner is hired, so everything is clean. The view is amazing (the apartment is on the hill, just under the castle).
The access can be hard for persons who are not very fit : it can be steep and hard to pull suitcases on unevenly cobbled streets. From the metro Baixa Chiado, you take 2 separate lifts. One of them closes at 9pm.