I stayed a few nights there. It's such a great, uncomplicated campground—clean, organized, and 'flexible.' The only issue was the lamp in the bathroom, which stayed on all night but wasn't really necessary. There are no showers, but you can shower in luxury at the old inn lodge for 4 or 5 dollars. In the morning, there's nobody bothering you, and you can grab a coffee. I was there in August 2023. 5*

Edit: It's also the most central campground and you can reach everything comfortably (in Yellowstone terms and distances)