My fiend and I stayed at this room in June. Our first impression was really negative. First upon arrival, we found out that the building, just right about our apartment, is covered in scaffolding on both sides, facade where the livingroom and the courtyard where the kitchen are. Contractors, smoking badly, were moving their materials upstairs through the staircase covered in construction dust. Then, when we arrived, the cleaning lady still was there and our room was not ready for us. After a night-long flight, we had to wait in the living room when the room is ready and we can settle in finally. Another low point was that the place is really noisy. Right across the very narrow street, there is a GoCar car tours rental shop. So our first morning in Lisbon has started at 6:00 am with about 10 to 12 engines roaring one by one leaving the shop right under our room's windows. So we had to use earplugs through the entire two-week stay.
Also, there is another roommate in the apartment (we somehow haven't expected another person living there), but a very nice lady who became our good friend by the end of the stay. She helped us with local navigation and was a very interesting person to talk.
Overall the the impression improved during our stay. The apartment is very comfortable and includes all amenities possible for travelers' convenience. The location is a huge bonus, smack in the center of all tourists attractions, shops, restaurants and all kind of transportation. Which of course makes it so noisy. This is not ideal as a quiet relaxing retreat if you are looking for one. Place is very vibrant and full of local flavors and spirits. If you are up for discovery, that's the perfect place to stay.