Even though Sebastio and Joao sent me detailed information in entering the building, I had difficulties in getting in the apartment at first. I was a bit confused in figuring out I was doing right. But I am very satisfied in overall.
As other comments, it was kind of hard to bring heavy carriers up the narrow stairs BUT getting all those carriers down were much easier. The apartmet was very close to many places ; restaurants, the square, famous tourist spots, train station and subway station. I am sure this place is best place for the stay in Lisbon!