What a wonderful surprise to find an elevator to take us up to the apartment! Then we find a well laid-out space with excellent light and everything we need to make our stay enjoyable. As others have noted, this is in a great location, not far from either the river or the center of the city.
The only notes of caution: the city center is up the hill (which is steep). That is the nature of Porto which cannot be avoided, so be prepared. Then, there is no convenient grocery store other than the small neighborhood market. Fresh fish and vegetables are best obtained at the large market in the city center.