Ana & Antonio's are great hosts and Silvia , the concierge host was very helpful and friendly. Silvia received us late in the evening and showed us around.
Our first impression of the street where this apartment is located was not great. There was construction going on and it looked like a dark shady alley, especially after rains. However, it turned out to be quite safe with friendly people all around and excellent restaurants within 2 minutes walking.
Pros:
The place is renovated inside and is comfortable for two people. Everything in Lisbon worth seeing is walkable from here. Rossio station is right next door and you can take train to Sintra.
Cons
The bathroom needs some ventilation fixes and smelled like mold.