Marco and Carla's apartment is little but really cozy and clean. It is also in a great location that allows to get to the city centre on foot in few minutes. They have been very kind and accomodating. We asked to check in in advance just to drop off the baggage and we set a reasonable time for both of us. They also helped us to book a taxi the day of the check out since no public transport got to the airport so early in the morning. We highly recommend these guys and this home, especially for the location for those who have just few days to visit Porto.