we had a lovely stay at Isabel's, at arrival we were welcomed by Isabel and her husband and we all got port wine as a welcome drink.
Isabel is friendly and speaks english very well.
The apartment is big and clean with all facilities you'll need. 2 nice and big bathrooms, 1 even has a bubblebath. the location is perfect just outside the city center with a lovely view of the ocean in a quiet neighbourhood. I sincerely recommend this apartment to anyone wanting to stay in porto