We rented Mario's apartment for our weekend trip to Porto and had a great experience. Even though our flight was delayed and we arrived after midnight, Mario was waiting for us to welcome and was very kind to provide us with information what to see in the city and where we can eat at this late hour. The flat is small (well, it's not really a flat, rather than more like a 3* hotel room) and well-packed with everything you might need for a short stay. Perfectly located, it's a great option for anyone who's into walking across the city.