Great place to stay for couple of days and enjoy the city. We had a great time in the appartment since it's so spacious and got everything you need. The hosts are also real nice and the Check-In/Check-Out was easy going without any issues.
The only con I see from the appartment is the overal wear and tear of the furniture, but that wasn't a big problem for us. Only the door handle of the bathroom needs some maintenance. :)
Overall we had a great stay in the appartment and enjoyed our time in Porto!