Joao was the best host I've had through Airbnb. He took time to go through Porto attractions on a map and make - really great - recommendations for local spots to check out, and gave me that map to aide my journey. He is super easy to talk to, really nice and funny - I felt like I was staying with a good friend. He is warm and friendly, and makes staying at his place an absolute pleasure. His home is conveniently located right in town, making it easy to walk to just about anywhere in ~20-25 minutes, and in many cases, in 5-10 minutes. Especially for the price he charges, you can't beat it. Stay with Joao!