I stayed in this studio in Porto for 3 nights. It is located on the ground floor, accessible directly from the street, meaning that there is no hallway or anything to separate the studio door from the sidewalk, a plus if you have a lot of luggage. This results in the place being a bit a loud, and also cold.
A big problem was the sewage smell coming out of the bathroom, so it was important to always keep the bathroom door closed.
After a delay in getting back to me with check in info, Maria Amelia was very responsive and the check in ran smoothly.