The best AirBnB location we've stayed in yet! Accommodations are spacious, clean, modern, comfortable, and all with a beautiful view. The apartment is well-furnished, and the king-sized bed was markedly more comfortable than any others we slept on in Europe. Separate air conditioning units serve the bedroom and the living room, and the bathroom is roomy and comfortable, with a spacious shower having both "rainfall" and "handle" options. I would happily live in this place!
It may not be right in the thick of the most "touristy" parts of Porto, but the view of the last bridge and out into the Atlantic make for a special start to each day -- and the terrace is a wonderful spot to have a glass of wine before wrapping up your evening. There is a grocery store just a couple minutes' walk down the hill, and Uber rides are especially cheap if you wish to get a bit closer to the Riberia district.
Marcos is a great host who clearly cares about his guests' experience, and he makes a special effort to meet you and make sure the accommodations are to your liking. I highly, highly recommend this location.