The biggest advantage of the apartment is its location: very close to the Metro and the 28 tram line, a shop and restaurants down the street, live Fado concerts 2 blocks away. At the same time located in a very quiet street.
The second big advantage, the terrace, proved not to be convenient in the Winter.
I bet this must be an excellent place in warmer seasons, in the Winter season it's quite dark and chilly (we got a radiator from the hosts to help on cold nights). You must be aware that the door in the living room opens directly to the street, which means lower isolation from cold and noises. Also the apartment is smaller than it seems in the photos, but was enough for a family with 2 kids.
All in all an excellent choice if you want to feel the atmosphere of living in the center of Lisbon. And for an unbeatable price.
The hosts Maria and Leonora are very friendly and ready to answer your questions round the clock.