We had an overall great experience staying with the Santos family. Right from the start communication was prompt, correct and the welcoming was friendly and enthusiastic.
The apartment was as described: clean, cosy and had all the necessities. Only downside is that it's a bit small and you can hear some noise from the neighbours. But in the end: Lisbon's got so much to offer you won't be in that much anyway and the apartment is really in the more quiet area if Barrio Alto.
If you're looking for a great place to stay in Lisbon centre for 2 persons, than this apartment is really recommended for it's location and quality compared to the price, but above all because of the warm and friendly Santos family who make you feel at home right away. They'll do everything to make your stay even better!