We stayed four nights in this beautiful apartment of Marco. The checkin was very easy and Helena had a lot of time for explaining everything. You can see from the apartment the river "Douro" and the wine traders on the other side of the river, it's very beautiful! The house is near the street "Rua das Flores" and nearby the train station. You can reach everything in the city center by feet. Also there is a bus stop directly in front of the house, from where you can go to the beaches of the Atlantic coast.
We loved the stay there and will defiantly come back for your next trip in Porto!!