If I return to Porto, this is a place I'd heavily consider returning to.
It's roomy, with high ceilings and nice windows that make relaxing after a long day out enjoyable.
The location is fantastic, being a short walk from morning coffee / brunch places, and far enough up the hill that you avoid crowds at night.
(There is some noise at night from folks on the block, but it's nothing the fan in the room can't drown out.)
Oh, and Pedro had all manner of local tips, even going so far as to draw out some landmarks on a map!