Some of our family stayed here during a recent trip to see Glacier NP. The cabin is about a 50-minute drive from Apgar on the west side of the park. Keep in mind that the road from the park to Polebridge is partly unpaved, and that the mile or so from Polebridge to the cabin is unpaved and quite rough.
The cabin is very basic in terms of amenities. There is a fridge, but the water pump (for shower and sink usage) is run by a generator. This is easy to turn on, but it can't be run constantly; you turn it on only when you need it. Other lights are propane, like lanterns. You turn the gas valve on and light the mantle.
There is a land line phone, and we did successfully get in touch with the owner's answering service to report a minor issue, which they resolved the next day.
So this is a nice cabin and worked well for us, but just bear in mind that it is off the grid and rustic. Overall, though, a great stay if that's what you're looking for.