This apartment is really amazing. It's located in the heart of Porto in one of the busiest streets, however the sound isolation is so good that the outside noise does not disturb at all. Right at the door you have very nice restaurants and bars, meaning that you do not need to go far to enjoy. It's close to all the main attractions in the city, you can go walking everywhere. The apartment is really what you expect from the pictures shown. It was clean and the host was great. If you go by car you can find parking easily in the neighbourhood, but during week days and Saturdays you need to pay parking meter.
If you are thinking about visiting Porto, this is definitely a place do consider, you will have a great experience.