Upvote:3
There is no generic site to to look for this specific type of cabins but if you do a quick Google for Wilderness Cabins you can get a lot of options all over the US
The list could go on and on but I think that would be enough for the moment given that it might be non-constructive as far as the FAQ is concerned.
Upvote:4
There's Flipkey by Tripadvisor. It's pretty new so the listing are limited, but there's some pretty isolated and scenic places. Might want to try Craigslist too if you have a place in mind. Good luck!