Patricia was very helpful and kind, she gave us a lot of information and tips for our stay in Lisbon. The location of the apartment is great as in it is located very close to Rossio and therefore in walking distance to many tourist sights. However, the area is a bit sketchy. Also, the apartment is way smaller than it looks like in the pictures. the bed is unconfortable (very hard mattress) and the apartment only has 1 window. This is also why it is always humid in the apartment. We couldnt get the humid, smelly air out of the apartment even after using a fan.
All in all, the price performance ratio is fair but I personally would not stay there again.