I traveled to Porto with a friend of mine. The studio is small, but is fine if you go for a weekend break and can fit 2 people. It's in a very good location, just right next to all the main attractions, shops, restaurants, metro stations etc. In fact, it's so close to all the major places that you won't need to take any metro unless you want to explore some other places outside the city. João was super helpful and welcomed us at the agreed time next to the property. He told us about main attractions, things to see, marked them for us on the map and was always very responsive whenever we had questions (we used WhatsApp to communicate). I can highly recommend this place if you want to visit Porto. We really enjoyed our stay there.