I had a good time staying at Vitor's. Check in was easy, and Vitor gave me a great, friendly welcome, providing me with a map of Porto and in explaining alot of the things I could go and see. The room has a fan for hot weather, it's own shower/toilet and is secure behind a locked door.
The room is very centrally located, literally next to the urban train station (never had any problems with train noise) which you can also use to quickly get to the Campanha station as well as minutes walk from main areas/sights like the old town, the main bridge, the cathedral etc.
I would happily stay here again if at some point I revisit Porto.