We did a quick overnight here as a winter storm was hitting the Montana Mountains the next day and we wanted to make as many miles as we could.
http://www.trailswestrvpark.com/
The RV Campground is located behind the Best Western Hotel at the Corner (I 15 and US-2).
You check in at the front desk of the Best Western. We had to take a pull thru site due to the size of our rig. The regular price for a pull thru is $40.00 per night, but they honored our Passport America and which gave us a 50% discount.
There are 32 sites that can accommodate from 30′-60′ rigs, some back-in and some pull-through, gravel, most appear fairly level, a few tress with some grass, and concrete picnic table, basically wide open but it did the job.
WiFi was great, as out AT&T mobile hot-spot was not activated yet.