This is without a doubt a great apartment in a great location, you can do everything in Porto by walking. The check in was smooth and pleasant. The host was accommodating considering I was supposed to have my sister and mother with me, but they could then not come, and I changed the reservation to one person. There were two issues though: 1) on the first evening I noticed the coffee machine was not working, and sent a message to the host. I did not really get a feedback, and could not enjoy good coffee at home for 4 days... 2) Second and most important, I left on Sunday morning to go to the airport and left the keys on the kitchen table as instructed. To my surprise the main door of the building was locked and I could not get out. I had to knock on the door of neighbors, and a man opened the door for me but he was really upset and his wife was literally screaming and cursing at me (and I cannot really blame her). They said "this happens all the time with AIRBNB people and we are tired of it". I believe the host and AIRBNB should get this situation organized with the building and neighbors, otherwise the guests can be sure to go through a very stressful and unpleasant situation, which is a pity as this is really a great place and location.