We stayed at Jorge's place for a full week and we had a lovely time there. Jorge is a great host; super friendly, welcoming and very responsive. He will answer to any of your questions and needs immediately. The room is as advertised - clean, comfortable and with a nice pop-art feel to it. Basic amenities like a refrigerator, microwave, cups, glasses, water heater are available and towels are replaced after a couple of days.
The location of the apartment is great - close to the metro station and also to the city center; very easy to explore Porto on foot.
Note that this apartment is located on the first floor next to a busy street so during daytime there is quite a bit of traffic noise but during the night it's nice and quiet. Definitely recommendable and will contact Jorge again on the next trip to Porto!