We only stayed one night in Casa 22 but that was enough to say this is a very good experience ! Kiki and Teresa are warm and helpful ladies, they greeted us and showed us around the modern and clean apartement with an artsy touch ! It was very comfortable, no noise coming from the neighbors, a great view on the azulejos-covered church just in front! Casa 22 is also very well located, close to a metro station and also not far from Sao Bento train station (convenient for travelers but also a must-see). Our hosts left oranges in the fridge for our breakfast and we loved that little attention. We had to leave our luggage somewhere until after the normal check-out time, and Kiki and Teresa found us a solution. Overall, a good basis to visit and feel Porto!