We stayed for four nights at Ermelinda’s apartment and we loved it! It’s a bit further out of town but very walkable, about 20 mins and also very easy on the metro, only 5 minutes.
The apartment is beautiful, lovely decor with high ceilings, great amenities and the private garden with loungers is an added bonus.
Ermelinda was a pleasure to deal with, nothing too much trouble and it just made our trip to Porto so easy. Book a stay here, we highly recommend it!