The studio is nice and clean with a small bathroom. I stayed on the 4th floor of the building where they have other studios, so there's a nice view of the roofs of Lisbon with some distance from the tables of the restaurants and bars of the small street in Bairro Alto.
The advantage of staying there is that you have many places to eat and drink by the door and all around the neighbourhood, but it's very noisy until midnight-1am every day, so if you want silence you'll have to close the terrace door, which is the only window in the flat. There is an air-conditioned and the door has good soundproof.