This apartment is really well located, right in the center of the old city of Lisbon, near the water and right across from one of the best restaurants we experienced on our trip. The neighborhood is very safe, walkable, and convenient. The apartment itself is not bad. Other reviews have mentioned the noise... it's true that you can hear neighbors above walking on the floor and people talking in the hallways and outside. However, it is an older building in a very touristy area, so this is to be expected. We did experience some problems in the apartment when we got there, and the host, Rui, was very responsive and addressed them right away. That said, the apartment is not very well maintained. The sofa and chair in the living room are basically falling apart, one leg of the sofa is about to fall off, making it not really safe to use. When we arrived, there were body soap and shampoo dispensers in the shower that were empty, and there was no kitchen towel. The TV furniture, which is mounted to the wall, was hanging off the wall when we arrived, and it fell off completely while we were staying. Again, the host responded to these things right away, but our feeling was that they flip this apartment very quickly and don't really pay much attention when things are broken. I understand things happen, but there were multiple problems that would have been avoided if the owners/hosts paid more attention and kept up the maintenance of this place.
For anyone needing to do any work, you should be aware that the wifi is extremely slow. There was not enough speed or bandwidth to stream Netflix, and when running a speed test, the maximum speed I got was 1.2 gb/s.