We had a very lovely stay at Vivian's place, it is very spacious and clean, allowing to enjoy some rest after visiting the city. The location is very good, on the metro line going to the airport and 10 minutes walk from the edge of the historic centre. The only weakness of this flat was that on 2 of the 5 nights that we stayed there, there was a lot of noise coming from other flats. In one of the occasions Vivian was able to help as it was a flat that she was renting.
You will love Porto and this lovely flat!
Best
Vale