This is very much outdoorsy terrain, and the campsites are excellent. The cheapest sleeps are in the USFS campgrounds east from Sierra City along Hwy 49. Wild Plum, Sierra, Chapman Creek and Yuba Pass all have vault toilets and running water (Sierra has river water only), and first-come, first-served sites. Wild Plum (47 sites) is the most scenic. If you're not bringing your tent, Buttes Resort is the best option.