The unit worked well for our family visit to Yellowstone. Location is very close to the West entrance and the road was plowed/maintained for our wintertime visit. When turned on, the heat really works and the upstairs can easily overheat. Pay attention to the helpful info in the house guidebook.
Because this was winter, upon entry the unit was really cold (set at 50), which I understand, but it also was very musty smelling, like it hadn't been occupied in a while. We felt the need to open windows to air it out before turning the heat up.
Some of our group thought the mattresses were way too soft, caved in the middle. Others were ok, so have a look at the beds or maybe assign rooms accordingly.
Note that while there's a garage, it isn't for parking (supplies/storage) and probably that's noted in the listing but be aware you can't park in the garage.