Joana is a great host. She knows how to run an Airbnb properly. Communicates well, Nice decor, clean apartment, very flexible with check in/check out times. She had plenty of amenities in the apartment (well thought through). The positive reviews are all correct and everything was at par or better than expected.
As per the location it can't get any better, central to almost everything. It is at a busy square in Lisbon. Our favorite restaurant in all of Lisbon was steps away from the place (Taberna).
Given that this is in a central square, it can get noisy at night. If you are a light sleeper you might want to keep this in the back of your mind. This is due to people from clubs/pubs from Bairro Alto neighborhood, walking south after hours, some of them descend on the square. This is the only issue we encountered staying at Joanna's place.
Overall, we would recommend this place to others. We would stay here again, amazing value.