The description fits perfectly - the appartement is located near the city center (it took us 10-15 min of a relaxed walk to get there), easily accessible with a metro (even from the airport (!!!) ) and a bus. Porto's a bit of a maze, but we found the place quite quickly thanks to the map that Cristiana provided us with (and which she drew herself)! The apartment is quite spacious and decorated with excellent taste and it has a great terrace to enjoy some sunlight whilst reading something from Cristianas library. The room is quiet, bright and with a wonderful view over the neighborhood with the ocean at the horizon. The bed was very comfortable and we were provided with bed linens and fresh towels upon arrival.
The true gem of this place was our lovely host, Cristiana - she was always eager to answer our inquires about anything, starting with the bus schedule to explanation of certain historical facts, always kind and bright. It was a truly wonderful experience and I encourage you to choose this lovely place and it's wonderful host for Your travel to Porto :)