The house in Crestuma is a residence on a very steep slope, facing the Douro River and the North. The three-bedroom (T3) layout is spread across two floors. Only the upper floor faces the sun. The house is designed to ensure thermal comfort and visual comfort in all living spaces. All living spaces are illuminated by the direct incidence of sunlight and, at the same time, allow for the enjoyment of the unobstructed view of the Douro River.