You can rent the Mammoth Cabin or Lake Cabin through Reserve America. The guard station is the Mammoth Cabin. The Lake Cabin was moved nextdoor. There are things you should know that is not on their website. We stayed there for 2 nights although booked for 3. We left early due to needing a more comfortable bed and boredom. We stayed in the Mammoth Cabin and looked inside the Lake Cabin.
Pros: tucked away, forest behind cabins, nice views across meadow's, lots of wildlife, hot showers, decent kitchen, nice porch, plenty of firewood everywhere, fire pit, propane kitchen.
Cons: you can hear campers everywhere and occasionally gunfire, barbed wire fences everywhere making hiking impossible, missing window coverings, if you don't rent both cabins you won't feel the seclusion, the bunks beds in both cabins are missing the top bed rails and have a warning sticker that without bed rails not to use because you may die, the top bunks are too scary for most adults and are useless for children so there are really only 2 beds in each cabin, the lake Cabin has a fire pit without any shade, beds are not comfortable (especially the futon-like one), the lake is too far to hike to because of lack of shade, the lake is very small and crowded with no trees, you must haul away all your garbage (there are no dumpsters within 30 minutes driving), I had zero cell phone service.
I hope this helps others.