My short staying at Miguel's place was great! The location is excellent. You can walk to basically all the main attractions and you also have everything you need around you (metro station, supermarket, restaurant, pharmacy, mall). The flat is comfortable and Miguel thought about everything, I felt like I was at a hotel! :) He is super prepared to give you all the tips you need to enjoy the city and during my staying he was always available to answer my questions right away. He's one of the best hosts I've met in Airbnb and I would definitely recommend his place for a trip to Porto!