We had a great stay in Porto. The room was very clean and was perfect for a short stay. It is also centrally located, you can walk quickly to the main shopping area and some sight seeings.
Since we arrived after midnight, we had to check in at a very late time, but that was no problem at all and went very smoothly.
The communication with Alexandre was always quick. We had some misunderstanding with the time booked for the Airbnb, which was totally our own fault. However, Alexandre immediately offered help and was very understanding. We also forgot our earphones at the accommodation, but Alexandre was so kind to bring it to us. In general I can only recommend Alexandre as a host.