Ana has been a really nice host, she gave us many good tips and she has been always helpful. She was also always easily available. The apartment has a top location to visit the city center, but there are few points to mention: if you are tall you will have problems to fit in the shower and in some areas of the apartment, because it is right under the roof, so the ceiling is naturally not flat. The apartment was generally clean but the bathroom could have been a bit cleaner. You also have to consider that there are other guests from Airbnb in the apartment. Even if it has not been initially mentioned, that has not been a problem for us. If you arrive by car you have to consider that if you do not want to pay additional money, you have to park approximately 20min by foot away from the apartment. Additionally, if you decide to pick up the keys in a locker at the station you have to pay some € to open the locker.
I would recommend it for a short stay in Lisbon if you can accept some compromises.