Achtung Google Maps zeigt nicht richtig: Diese Webbeschreibung folgen:

From the north: Innsbruck-Brennero-Bolzano, from the south: Verona-Trento-Bolzano.
Exit at Bolzano Nord.
Head towards Bolzano city center and then follow the sign for Ritten/Renon – take a right onto the Renon road and drive up the mountain for about 14 km. Then turn left towards Oberbozen/Soprabolzano. After the Costalovara lake continue for about 400 m, then turn right and follow the signs to the Lichtenstern/Stella - Haus der Familie - ADLER Lodge RITTEN (1,5 km).