Suggestion to reach
the Arnikahütte from Compatsch:

From the parking lot “Puflatschlift” to the Eurotel, the driving way to the “AVS Hütte”, far to the mountain station Puflatsch then flat up to the Arnikahütte.

Suggestion to reach
the Arnikahütte from Kastelruth

From Marinzen in Kastelruth (1060 m) first through meadow and forest moderately steeply to the Marinzenhütte, then more steeply to the Arnikahütte (2060 m).