We were there in February 2020 (2 adults and 2 children). The landlord family was very friendly and helpful and the apartment was suitable for us. Haus Quelle is conveniently located near the valley station for the beautiful, varied ski area of Saas Grund. The rest of the infrastructure is also easily accessible on foot (including restaurants, supermarkets, tourist office). All in all it was a nice, relaxing holiday.