AirBnB is a funny community. We have been lucky to have stayed in properties around the world and as such, have seen some exceptional places to stay. The Duque de Loule is as described and was a comfortable, clean place to spend 3 days exploring Porto. But as I sit in another AirBnB in Lisbon, I am struck by the little things, which for me, can make a difference. Duque de Loule provides body wash in the showers, but the kitchen had no supplies whatsoever. E.g. there's a coffee maker but no pods, no salt, olive oil, etc. Many hosts provide a bottle of wine and information about restaurants in the area, things to see, etc. DDL has none of that.
I wanted to give Duque De Loule 5 stars, but for ratings to be valuable, users must be able to differentiate at the high end. With a few more thoughtful touches to make it special, while maintaining the cleanliness, etc., DDL could be a 5 star stay. It's close but not quite there.