I have lived in Lisboa a few years ago and came back for a few days to visit a few friends. Nuno and Alexandra apartament had the perfect location for this, as it is close to the airport and the Parque das Nações área. I traveled with my 10 month daughter and Nuno and Alexandra were kind enough to provide us with a bed for her. The apartment was in great condition and has a great view. It was very close to the supermarket,Metro and restaurants.
Alexandra and Nuno were great hosts and very responsive to our questions.
I will stay there again next year when I come a visit friends again.