I highly recommend Hugo and Silvia's Alfama apartment. Hugo, with whom we worked most closely, was extremely helpful in answering questions up to and during our stay, and he even picked us up from the airport and showed us a beautiful view of the city on the way. The apartment itself is incredibly nice, with a fully equipped kitchen and bathroom and a comfortable living space. The apartment is close to the metro station Santa Apolonia (where there is also a supermarket) and a tram stop, so getting around the city is made easy. Overall, our experience at the Alfama apartment was a great one!