Very professionally run. Host responsiveness and attentiveness is exceptional, and when my flight was heavily delayed - the host still ended up waiting for me until well past midnight anyway. My stay was very comfortable, and everything I needed was present. The room is spacious and the bed comfortable.
The property is a 5 minute walk from the metro station which is then only about 10 minutes right into the center of town. I will look forward to staying here again in Porto.