Family moments at the Top. Falkensteiner Hotel Sonnenalpe is an exclusive, Alpine-style family hotel located at 1500 m above sea level in the skiing and activity paradise of Kärntner Nassfeld. It features country-style rooms, lots of Alpine charm, Falky-Almland staffed with loving caretakers, a 15-meter-long waterslide, 1700 sqm Acquapura SPA Wellness area, and delicious Alpine – Adriatic cuisine. Book now your family vacation in Austria!