Vasco was extremely welcoming when we arrived at the apartment and took the time to explain everything to us. His tips and suggestions on where to go for food and sightseeing were spot on and we had a great time trying all of them out.
The apartment is as described and located a mere 5 minutes walk from Balhão metro station. It is pretty central and takes about 20 minutes to walk to the river or to bars/restaurants/tourist spots on the other side of the city centre.
The apartment is equipped with everything a couple will need if staying there for a few days would need. (The powerful hairdryer was an added bonus for someone who has long, thick hair!) It was clean and the area felt safe, even at night. You do get a little bit of noise from the restaurants/bars over the road, but it was only on Friday we heard it and it wasn't loud enough to disturb us.
All in all this is a great apartment with a very welcoming host in an easy location. We had a great time in Porto and will definitely return in the future.