After walking all over Porto, I firmly believe that Andre's apartment is situated in the best part ( Gaia).
Seeing Ribera from the wonderful Ponte de Dom Luis bridge is a great start to the morning and crossing again in the evening when the sun is setting is even better.
Every major sight is within walking distance and the tram stops a few metres from the apartment entrance.
Inside is very clean and access is simple. The kitchen has a coffee machine ( great for my brother and I), the bathroom has a powerful shower and the beds are very comfortable.
Andre gave us some great tips for restaurants and sights to enjoy.
He answers queries quickly and is very approachable.
I highly recommend this listing.