Really enjoyed our stay with Porto City Hosts! The space was beautiful, clean and so comfortable. It is located perfectly within Porto and has lots of great bars, restaurants, sites, etc. nearby. I would definitely recommend this space to anyone!
Word of caution though: we drove north from Lisbon and therefore had to find parking... there are parking garages near the Airbnb but driving in Porto is hectic and stressful... If you can avoid driving to/around Porto please do!