Way better than the hotel/AirBnB & Car Rental combo. Waking up to the sunrise at Kumu Camp is 👌🏽.
Cleaning policy is a bit confusing as you're instructed on-site to get the car washed ($15) and vacuumed ($3) on your dollar even after paying the AirBnB fees that incentivize the Host to have it cleaned after each stay (which is a mandatory legal responsibility of the Host). If you don't perform those tasks, then you're charged an additional cleaning fee upon returning the vehicle.
Nonetheless, this is the best way to experience Kauai. Independent and practical.