The location is good, just two stops by metro to initial stop of well-known tram 28, which also can be a good starting point for city discovering. The only thing we didn't like is smell of cigarettes in the living room. It's ok to us in general, but we were with a small daughter and it was a bit annoying. There are supermarket and good fruit shop next to. The apartment is good equipped. If you like cooking there is everything you are needed. Communication with the hosts were great, they were reachable at any time and provided us many valuable hints. And as we arrived at midnight it was so great to have cold beer and sweetest pastel de nata as a gift! Would I stay there if I'm next time in Lisbon? No any doubts! )
P.S. There were reconstruction works at one of the apartments on the lower floor, which started at 8a.m, but it's good, because doesn't allow you to sleep much and motivates you to go out and enjoy the city!)