The apartment is perfectly located - lots of shops and restaurants nearby, and also most of the popular attractions are just in the short walking distance.
It was a bit noisy though. We could hear the neighbors, what sometimes was keeping us awake.
Overall it was a good stay, flat is very charming and comfortable. It would be great if could have more towels when staying for a week, as one big and one hand towel per person is not enough in my opinion.
Despite the minor negatives I would still recommend to stay at this apartment if you are in Porto, the location will not fail you.