My wife and I stayed in this apartment for 3 nights during our time in Porto on our honeymoon. It is a very nice place! I felt bad that we were late to arrive but Miguel was very understanding and even sat down with us to give us a very helpful introduction to the city of Porto.
The apartment itself is very new and clean with heaters - which were appreciated since we were staying in January. Despite a central location it was not too loud. Because of the location, we walked everywhere including across the Douro River to do some port wine tastings. Absolutely loved it and would stay again!