My family and I are from the United States and stayed at Ricardo's apartment for 2 nights. Once we arrived at the entrance, I called Ricardo and he had someone quickly meet us at the entrance (probably within 1 minute of calling) to open the front door and show us the apartment and everything we needed to know. The apartment has a magnificent balcony overlooking the Douro river and the main bedroom has a smaller, private balcony that has the same view. The apartment is big enough for at least 6 people (3 bedrooms) and has everything you could possibly need for a <1 week stay. If you're looking for a quieter neighborhood that is about a ~15 minute walk to the center of Porto, this is the place.