Joao's apartment is pretty much as advertised. Its clean and right in the heart of downtown Lisbon. Air conditioning is a must in this area as this is right down the road from Lisbon's famous "Pink Street" so there are people out all night just outside the apartment. It didn't bother us sleeping though.
Overall a good apartment if you want to be in the downtown with nightlife. It is a corporate rental so its not the same "Air BNB personal experience" as an individual owner.