We stayed for 2 nights in late August. The location is fantastic: a couple of blocks away from Banff's main downtown street, and a block away from a great pizza place.
The owners were very friendly, but it was hard to escape the feeling that this was a business, not a home into which you were being made welcome. The room was comfortable enough, but nothing special (the bathroom reminded me a little of the cabins in Yosemite); the breakfast ok (help-yourself to as much toast, bagels, muffins, yogurt, juice ... as you liked).
On the other hand, the reason to go is the park, not the place you stay.
Summary: a convenient, reasonably comfortable base for exploring. Recommended - but not hugely enthusiastically
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