Ola! My girlfriend and I really enjoyed our stay at Rui's place. Even though we were 4 hours late to check-in due to flight delays, Rui was more than hospitable to meet us at 12:30 am to welcome us, show us around the house, explain the amenities & local scene.
Rui has rebuilt the house with unique woodwork and a pseudo-castle-like ambiance with the large stone walls. The house stayed cool, the wifi works great for zoom calls, and we had all of the needed amenities. He was kind enough to leave bottles of wine, bread, and snacks; this came in handy given the long travel delays.
Lastly, it is located right next to the river and sits half-way up the hill between the lower river level and the upper level where there is the city landscape. Although, we spent most of our time on the river, it was central to everywhere we wanted to go. Given that is was central, there were a lot of stairs and there is no way around climbing up and down every day. We didn't mind given it helped us work off the food.
Lastly, again, since it was central to Porto, there was a lot of city noise (cars, foot traffic, dogs, etc..). If you are used to the noise, then it is a perfect place for you!