Filipa apartments is great in a wonderful area of the Alfama district, with a view of Lisbon and the water. Very close by - up the hill as well as down the hill - you will find a bunch of very nice small typical Portuguese restaurants. Famous tram 28 stops right on the street corner.
The apartment has all the basics you will need. Filipa was really nice and gave us a lot of recommendations for sightseeing, restaurants and bars in Lisbon.
The stairs to the third floor and also inside the apartment are quite steep, so that you should be careful with small kids, or if you are not very mobile.
I can definitely recommend staying at Filipa´s place and would like to come back again.