This is one of those remarkable places that AirBnB was invented for: a one-of-a-kind little house by the sea, tucked away behind a few local restaurants and newer houses. Arriving back to it after a day trip is like going back in time (in a really good way).
It's peaceful, quiet, homely, close to lots of fantastic organic/bio food shops, and the owners keep it extremely clean. They're also really responsive.
It's a very quick drive into Porto, and a great base for exploring the area.
You see the Capela do Senhor da Pedra on billboards across Portugal advertising this area... and it's literally 200m away. That doesn't mean there are loads of tourists, but it does mean you'll be in a very beautiful space if you stay here!