Our experience at Carolina's apartment was very good. The apartment was clean and well equipped, but what really stands out is its location: near Trinidade metro station (all metro lines) and within walking distance (10-15 min.) to São Bento railway station and Dom Luís I bridge. There is also a convenience store just around the corner and, if you don't mind to take another 15 mins walk, the Bolhão Market. Maybe it's worth to mention that noise from the street might be sometimes a bit hard to ignore, but on the other hand, I usually consider listening to the sounds that surrounds you an important part of travel experience, so it wasn't a big problem :) Plus, very convenient self check-in, a very useful thing if someone arrived later than expected :)