Arthur's Pass is a small alpine village built as a construction camp for a railway tunnel and never really stopped being one, a handful of buildings between beech forest and bare rock, at the highest point on the road between Christchurch and the West Coast.
Late in the New Zealand summer (February to March) for the most reliable weather on the pass, though the road and village stay open year-round. Winter brings snow and occasional closures.
The Wobbly Kea Cafe & Bar is the village's one real sit-down option: pub-style food, dressed pies, and a fireplace to dry out at after a wet trail.
There's little reason to base anywhere but the village itself. It's tiny, everything is walkable, and staying elsewhere on the pass means driving the same mountain road twice.
Do the Devils Punchbowl walk before settling in anywhere else. It starts a few minutes' walk from the village center, and the weather at this elevation can close in by early afternoon even on a clear morning.
Read more in Arthur's Pass Travel Guide: Alpine Village in the Southern Alps.