The flat was beautiful and spacious, with a great kitchen and comfortable bedrooms. We didn't meet Maria, but her friend Paula was very helpful and gave us wonderful recommendations. While we were happy to do lots of walking after eating so much delicious portuguese food, I wouldn't recommend the flat to anyone who isn't prepared to spend a lot of time on their feet as it is a bit out of the way. We had a wonderful time in Porto and would definitely stay at Maria's again.