Staying at Ilda's apartment was a great choice. Ilda was very friendly and met us near the Metro station. She then gave us a lot of information on things to see and places to visit and also offered to book a table at a restaurant playing traditional Faod music.
The place itself was perfect too. It had everything you could need (not just for few days but for living in it). It is located near the shops and bars and only few minutes' walk from the tram 28 or from the Metro station (handy for getting to and from the airport). The town centre is also within walking distance. All in all a great stay in a great place. Recommend Lisbon and the apartment thoroughly!