Valley View RV Park & Campground - Island Park, ID
Twenty-eight miles from the West Yellowstone Park Entrance is the Valley View RV Park and Campground (and laundry center...lol).
The funny thing about this place was that we didn't have high expectations. The photos on the website didn't really sell it, but it was the only place that had a spot for us.
We came to really adore this little place.
The spots were extra spacious and they were all pull-throughs.
The park was full. And the laundry center/office came in really handy for our weeks worth of laundry we needed to catch up on. They also sold ice and there's a little market next to the office building that we could pick up some supplies.
The park is across the highway from a lake and just down the interstate from West Yellowstone, except without the traffic.