We had a great stay at Teresa & Andy's apartment in Lisbon and would definitely stay here again if we are back. It is well located and we could walk to everything we wanted to see. We loved how bright the space was, the wifi worked great, and we cooked one night - the kitchen was perfectly equipped for that. For the two of us it was a perfectly sized space.
Just note that there is no elevator in case you have mobility issues, especially carrying bags up and down.