Like other reviewers, we give this apartment 5 stars. The photos accurately represent the space, there is lots of light, the apartment is quiet at night, the location is adjacent to metro, bus, and tram stops, and short walk to important city squares and tourist sights, as well as restaurants and grocery stores. Good shower and tub with plenty of hot water. The building is secure with 24 hr security. We would stay here again if we return to Lisbon. Note, however, we think the bed is a double, and not a queen size...not sure..it seemed a bit small.
If you need to store your luggage for a short time after checking out, the Parking garage across street has pay lockers you can rent. Very convenient.