We loved Porto and the apartment was perfect for us. It is very close to the Trinidade train station so getting to and from the airport on the tram was very easy. From the apartment we could walk to all the main attractions/areas of interest and the area felt very safe at night. The apartment was close to the main shopping street, the supermarket and there was a cafe opposite for cheap and traditional breakfast. The tips we were given on check in were very helpful, as was the detailed map. We found everyone we met to be very friendly and helpful.