Our stay in Marios B&B was a great experience! The flat ist Very spacious but cosy at the same time! You can see how much love is put in all the decorations and details! The kitchen has everything you need so you can actually cook there! The room was very clean as well :) you can walk anywhere you want to so you don't need a ticket! Also the metro goes directly to the airport :) also Mario has a wonderful app that you can use without wifi! We used it a lot :) if you want to visit Porto you should definitely stay here!!