Elsas apartment is perfectly situated on the southern side of the river in Porto. It is far enough back from the river that the lack of a view causes the price to drop to half that of comparable apartments. It is still plenty close to walk anywhere in the center of Porto and the bakery on the street corner, a mere 20 meters from the entrance, is a real treat. The apartment definitely lives up to the pictures here on Airbnb.
Be aware that you must pick up the key on the other side of the river (20-30 min beautiful walk each way).