Airbnb was clean and comfortable in the city center. What was not clear to us before is that the airbnb is not on the main street but in an alley. Opposite of the apartment a club is located that opens on fridays and saturdays. This led to quite a lot of crowds and noise, however we did not really mind it. The host was lovely and responded very quickly to messages. If you do not mind the above points I would definitely recommend it when you visit Porto.