Ana's place was lovely, and very nicely located. She was a great host, we communicated very well, and she had great recommendations for where to visit and what to eat in Porto.
My only complaints would be that, as we visited in the beginning of February the apartment was a little bit cold, and the walls are very thin, in case hearing the neighbors is something you might be worried about. Luckily the neighbors were not loud, so the stay was very enjoyable.