Best view of any AirBnB I've ever had! Amazing sunrise. Spending a day at the window having drinks and watching the boats on the Douro River is not a wasted day at all! The place is very basic, otherwise, so you may want to go shopping after you've checked in. The Auchan supermarket is an interesting, 20-minute walk to the northwest. Be prepared to hike up the hill from Vila Nova de Gaia tourist district (I don't think the buses go up that hill, but not 100% sure). I was allowed to check in very early, so that was wonderful.