My husband and I stayed for a month with our baby daughter in March. Convenient location close to the metro and train station. Very quiet at night and just a few minutes to the Alfama neighbourhood. Beautiful sunny patio (even in chilly March) and nice view from the living room.
Matt kindly arranged for a baby crib for us.
My husband and I found the bed a bit uncomfortable/creaky but we are used to cushy North American beds. :-)
I think it is good for 2 people but wouldn't recommend it for 4 as there wouldn't be enough hot water for showers.
Good value, nice place.