We booked this flat very last minute, and it was exactly what we needed for our three day visit. The apartment was very clean, and the hosts were very responsive when we needed assistance. The location is perfect - a 10-minutes walk from historic Porto and nightlife. Also, the flat is only a 10-minute walk from the E Metro stop / 3M bus which takes you to and from the airport at any hour of the day.
I highly recommend booking this Airbnb!