Maria's apartment is perfect located in a little square close to the city center. It's perfect if you want to explore Porto! The apartment it's really beautiful and cozy. It's very clean, tidy and comfortable. Since it is a duplex, it has two different entrance.
Maria is the perfect host, she's been plenty of very good advices on what to see, where to eat tipical food and how to move like a very portuguese!
I definetely recommend this place, if I'll back in Porto I'll try to stay there again.
Thanks Maria, all the best!