We spent 5 days in this appartment. It is very well situated close to the metro station and to the center of Porto ; it was very practical.
However, some basic things were missing : salt, pepper, towel for the dishes. The kitchen is very small so it was not very easy to clean the dishes but it still worked out. Plus, it is a bit noisy.
To finish on a good note : the people we were in contact with were very welcoming, the contact was easy, we could even let our luggages in the Welcome Center to enjoy our last day in Porto !