We enjoyed our stay in Raquel & Rogério’s apartment, and were there for nearly two weeks so had time to get to know the area really well. The apartment is spacious, light and airy with good views across the rooftops of Porto, and towards the Douro. It is very well located for the tram/bus to Foz, Matosinhos and beyond and within good walking distance of all the main sights. Rogério responded quickly to our queries most of the time, and speedily sorted out a few minor issues we had (replacing light bulbs, clean towels). Unfortunately the apartment wasn't ready for our arrival and we had to wait around an hour for access. Rogério was very apologetic and took our bags whilst we waited in a nearby cafe, so it wasn't too much of an issue.
Whilst we enjoyed staying in the apartment, the narrow street outside is intermittently noisy on most nights with traffic and people leaving nearby bars late. There are no bars and only one small restaurant on the street it is a thoroughfare down to the river. It may be less of an issue if you're only visiting for a few days and out most of the time, and it was mostly quiet from after midnight.