Vasco was very nice, he welcomed us with homemade porto and different advices. The flat was well-located and also nice. But a bed was a little bit small for 2 people (not a couple). It's ideal for one person or one person and baby, for example.
There were a noise from the window (as we understood after, it's typically for the whole Portugal, not only for Vasco's flat or Porto). In Portugal cities is a very good acoustic. So any car and especially garbage truck will make you nervous during the night.
Anyway I can absolutely recommend Vasco's place: everything was clean and nice.