Maria's apartment is perfectly located, very close to the 28 tram and the sights in Bairro Alto but enough of a distance to be quiet and residential. Maria is very easy to communicate with, allowed us to check in early (very helpful given that our flight arrived at 6am) and picked us up at the airport. The apartment is nicely decorated and cozy and the kitchen is quite spacious given the apartment's size. The apartment a bit smaller in person than in the pictures so I think it would be best for a shorter stay (two of us were there for a week) and no more than two people. The neighbors are friendly and the area is very safe. I would recommend exploring the Estrela, Rato, Principe Real and Intendente neighborhoods, away from the tourist hordes. Maria's apartment is situated quite well to explore these areas on foot (or by metro).