I stayed for two nights with my mom at Casa 22. We really loved our stay there. The apartment is centrally located, walking distance to many of the most important atractions. The apt is very cozy and modern, it has everything you may need. Kiki and Teresa gave us a warm welcome, they are great!, they provide us with maps and tips for visiting Porto and also fresh oranges, jam, butter and bread for breakfast!! You cannot ask for more. We felt at home. I strongly recommend staying Casa 22!