We stayed for 3 nights at Deco Gem Aliados and it was absolutely amazing. Our check in was done through Pilar who is lovely, a great communicator and a pleasure to deal with. She met us at the appointed time and personally checked us in, showing us the apartment and providing us with a list of recommendations. It couldn't have been any easier. Parking is available underground very close to the apartment (17 Euros for 24 hours). The apartment is gorgeous, very spacious and in a perfect location. You can walk everywhere very easily. There are several restaurants in the area (including a bistro right across that street which is excellent). Porto is stunningly beautiful and combining the city with this apartment will make your time there very special.