Being hosted by Raul in Porto was one of the best Airbnb experiences I've ever had. To start with, he has set up one of the most seamless check-in experiences you can have, we arrived on our schedule, no need to coordinate to meet up with a host as it's all set up to be done without him present. He was also flexible on check in time! (previous guests and cleaning permitting, I assume.) He has left a great list of places to eat, and the flat is very centrally located. If you're a walker, you'll have no trouble getting almost anywhere you want to go on foot. If you'd prefer the metro, the Trindade station is a short walk away. What really set this experience apart though was that Raul was also an enormous help when we had a minor crisis while we were staying with him. He was understanding, flexible, and genuinely cared about helping us. Hopefully things don't go wrong when you're on vacation, but if they do having a host like Raul makes everything less stressful.