I spent 3 days at Antonio's studio. The Place is located in the heart of Bairro Alto, where you can find many restaurants and bars with a variety of music. However, the studio is on the main floor, where you can hear people from the street talking and walking all night.
The studio's door is right next to the main door. That mean, you can hear the door opening and closing all the time, especially at night. When others tenants are coming home after they have been at a party or nightclub.
It's a place for those who like to enjoy the nightlife and don't worry about the noise, because this area is very noisy. If you are a light sleeper and want to have a restful night this is not the best place for you.