We had a lovely time at Ana's place and though she wasn't there, she made sure that her mother (who was the sweetest lady) could greet us. The apartment is very centrally located--easy to get to from the airport and a quick walk to most of the tourist sites. The rooms were very comfortable to sleep in, though if you are a light sleeper you should plan to wear ear plugs as the street outside can be noisy at night. Highly recommend this listing for your next visit to Porto!