PLEASE NOTE: the stairs are quite steep and narrow! (more than your average stairs)
That said, a nice tiny apartment located quite centrally in Lisbon. Most of the major attractions are a 15-20min walk from the flat, and there are plenty of public transport options nearby. It is true that it can be a little loud on the street, but if you are able to leave the windows closed that helps a lot.
Check in was easy and communication was clear, and Luisa was very understanding and flexible. Would recommend Luisa's place!