We had a great stay in Sofia's flat! The proximity to the airport is an advantage, and the area is generally quiet (except for the noise of planes, but being 5 min from the airport it seems logical). The flat is comfortable and very well equipped, the centre of Lisbon can be reached in 10 min by car, a supermarket is 5 min walk away and the area is well served by bus, taxi or even scooters :)