The stay with David and friends was superb, we definitely enjoyed the apartment and the service / help we got.
The area is okay for a few days and without kids, with grocery stores and good bakeries in close proximity. It appears to be an area that is just now evolving to become a more tourist-friendly place. Getting into actual Porto City takes some time when walking, finding the way to / from the Metro is a bit of a pain especially with Luggage.
But overall, a great stay and the apartment is nice by any means.