The check in was very easy and fine. But then I had to cancel the room as this is not a room to be rented. Right on the ground floor, facing the street where everyone is passing to look into the room. I had to work but there was no way as it was way to exposed and way too loud. Porto is loud, but here the noise was so extreme, that sleeping is impossible. On top of that the front door was right next to the room. The door would have needed to be adjusted as it would always get stuck on the ground and make an extra loud noise.
Overall I would not recommend going here as the conversation afterwards with the hosts or rather their conversation through the Airbnb support showed this is just business for the hosts.