The place is very well kept and clean. The flat is in a small street of the old district so it is out of the way of touristy area. Be mindful that Porto in general is a very hilly city and you will have to walk a lot to get back to this place. I have to admit the smell of the place was a little off putting. Again, this has nothing to do with the cleanliness as the flat was spotless and super clean. It's more of a sewage smell caused by the location and age of the place I would say. Unfortunate as the flat is great. Carla was more than helpful and she welcomed us herself with tons of great recommendations.