Ana and her husband is a lovely couple who really does everything to make you feel welcome. I stayed for one month with them and they helped me a lot to get a good start for my life in Lisbon.
The room is very quiet and cool during nights so no problems getting sleep. The "ensuite" bathroom is a nice extra at this place.
Well situated close to the airport, river and vasco de gama shopping centre. They are all within 15min walking distance and the bus passes by just next to the house.
I would definetely stay again if I had a similar situation in the future.