Such a nice place to stay! Spacious, clean and with everything you need for a pleasant stay. The apartment is just 20/30 minutes walk from the old town. Don't feel like walking? Take the underground just around the corner. Good connections with all trainstations (Cais do Sodre and Rossio) and the airport.
Igor and Ana are nice hosts and reply really quick when you sent them a message. I would definately come back here!