Had a great stay at Carlos's apartment. The location is fantastic for exploring Lisbon and is a few minutes walk from the metro,bars,restaurants, shops etc. The apartment was spacious for 3 of us and was very clean. Carlos was very quick with responding and very helpful. The only thing I'd say is that if you are a light sleeper the bedroom at the front of the flat can get very noisy in the evenings especially at the weekend. Also you have to walk up a very steep hill to get to the apartment, but this wasn't an issue for us but may be for others.