We enjoyed our short stay (only one night). Cláudio was very friendly, he helped us out with parking spaces (there was an event and the street was closed), he wrote back immediately and we could use the washing machine, despite being there only for one night.
It is not that far from the river Douro. To Porto it takes you quite some time, but we enjoyed the walk to the river and over the bridge! (about 40 minutes walking to the city centre).
The room was clean.
In my opinion the price was quite high for a room with shared bathroom, but I think this is due to high season and our last minute booking.. :)
Thanks Cláudio!