I spent a wonderful 5 days in Sandra's apartment in Lisbon. It is perfectly located - just a few steps from the Praca Comercial, and walking distance to all the other major areas of Lisbon, including 5 minutes to the closest underground station (do pack your most comfortable shoes, as walking around Lisbon is hard work!). The apartment is lovely and spacious, and it felt like being at home, which makes for a particularly enjoyable experience in a foreign city. As others have mentioned, the apartment is located on a busy street so if the windows are left open, the noise might be disturbing to some. However, if closed at night, the double glazing ensures a good night's rest. All in all, I would highly recommend Sandra's apartment, and will be sure to return when I am next in Lisbon.