The apartment ist very well situated, right between old town and new (chic) area with a beach. There are also two tram line stops right in front of the building as well as a supermarket 5 min to walk. We traveled with a baby and for our needs the apartment was not ideal as there was no equipment for a baby available. The kitchen had alrealy it‘s best days and the blinds didn‘t work partially. We were in Porto during a summer festival (Sao Jao) and there was a stage in front of the building which was really, really loud til 1 am, also not ideal for a baby.
Carlos was a very helpful host who was quick with his answers and looked out for his guests. All in all a solid choice if you travel with no special needs.