Very nice, welcoming and helpful host.
The apartment is beautiful with a fantastic view over the river, just like on the photos.
It is located (obviously) right next to the river in the old town with all the major sights close by. Also there are a lot of restaurants, bars and wine tasting locations right next door or within a few minutes walk.
All in all a great experience and we will certainly stay there again the next time we are in Porto!