Both Patricia and her apartment were wonderful!
The apartment was clean and clearly well-maintained with all the amenities you would need for 1-2 people to stay for just a few days or even a couple of weeks. The location was also fantastic—out of the way of the main tourist area, but still close enough to walk pretty much everywhere in ~20mins or less, including the central Saõ Bento train station. (if you prefer to take the metro, there's a stop nearby). There are plenty of nice, "authentic" bars and restaurants in the area, which are notably less expensive than those near the river.
Finally, Patricia was a perfect host: welcoming, communicable, and helpful. She gave us lots of recommendations on everything from where to eat in Porto and where to visit in the nearly Duoro Valley, to how to store our luggage near the apartment after check out. I would absolutely stay at her apartment in Porto again.