This is a great option if you plan on staying in Porto a few days before beginning the Camino. It’s about a 10min walk from the Trindade metro station (easy to get to/from the airport and to/from other parts of nearby towns) and a 10-15min walk from the main part of the city. The staff are very friendly and helpful! The hostel also offers a different event each evening that you can choose to participate in or not (e.g. Portuguese dinner, game night, movie night, etc).