The apartment was very spacious, nicely decorated with antique furniture, and has great views of the city. However it is not really in Port, but in front of it in the other side of the river. This means that there is some walking to do to get into the city and come back, but if you are really tired after a whole day exploring it is also possible to take taxi and still pay the minimum fare. You also need to carry your luggage three floors down and up, so just be ready for that. Nonetheless, it is worth because of the great views and the space available.
The best of all was Pedro. He was an amazing host. Really flexible and willing to help. He spent a good amount of time with us giving recommendations and explaining the city. He made all the difference between enjoying Porto and just arriving to another city!