We stayed in the apartment for three nights in September, and found it just the right size and in a great location. The metro is about a 5-10 minute walk, and tram 28 is also very close. There are also restaurants and shops within walking distance.
The apartment itself was clean and well kept. The balcony wraps around the entire apartment and provides a beautiful view of the city. The walk to the apartment is up quite a steep hill on cobbled streets.
We really enjoyed our stay in Lisbon and would recommend the apartment and our host Anna, who responded to our messages quickly and was very helpful :-)