In reply to ollie20964: I was there last year, the Hut Guardian is the same guy on the BMC introduction to Alpine Essentials DVD...I got a bit star struck
It's a nice, straight forward walk to the hut from Arolla. It's a fair sized walk, I'm sure it took us around 3-4 hours. Like others have said it is sign posted so you can't really go wrong and there is a clear path to follow to the ladders which take you down to the glacier.
As another post has said, the ladders are pretty big! But so long as you have a reasonable head for heights you'll be fine.
The Glacier is straight forward. It was dry when we were on it and littered with lots of stones and rocks. We never bothered with a rope, in fact there were so many rocks I'm not even sure if we put our crampons on for it.