It was very great to stay at Paulo's. The location is great for a short stay, close to the center but not in the busy and small streets of Porto. Apartment is clean, Paulo is here to help you of you need anything and he wecolmed us nicely with some Porto wine!
I recommend to stay at Paulo's if you visit Porto. The street is a bit noisy sometimes but only for light sleepers and after a day of exploration it doesn't really bother!!!