Vitor's Pension is extremely well located (literally just outside the train station) and the noise was lots less than I expected it for such a place in the centre.
He was very friendly and gave me some excellent initial recommendations for the city - perfect for me who visited Porto for the first time.
The room was very clean and exactly as described.
Just have in mind that there is no heater (as desribed), so the room can become a bit chilly in winter - especially when the sun is not shining.