Rodrigo's house was perfect for our needs: it's very confortable for three people, it has all the basic supplies to stay for a week and the position is great, especially for the nightlife: it is around the corner from the street where most bars are, yet somehow I couldn't hear a single noise from the bedroom. It's close to the subway and a train station in one of the main squares of the city, but Lisbon is developed on more heights, so Bairro Alto is reachable with the historic Elevador da Gloria or throught very steep rises. However, if you do not wish to tire yourselves out, you should probably change destination altogether. Also, Rodrigo is extremely kind and available for everything: he sent me the directions to the apartment and how to get there, wrote to me a few times to make sure everything was ok and always replied quickly to our questions. I would definetely recommend his apartment.