Really excellent place to stay. Great and friendly hosts - they met us at the door to explain a few things and were available for questions and help one day with our car getting towed. Place was clean and comfortable. A few minor noises in the building but relatively quiet compared with Porto.
Small tip if you are driving and using English version of Maps - search for a business called “Son of a Gun” - it is on a street just below where cars can drive and park (this apartment is on a walk-only street). If you park as close as you can to this business, it will be a short walk up the hill to the apartment.
We would stay here again. Definitely recommend.