The cottage was great! It's super cute, situated in the jungle, and under 10 minutes to Volcano National Park. We were able to sleep in and still go to the park every day before any crowds. It's incredibly convenient if you like the feeling of being alone in the nature of the park.
We were worried about the fact that there's a limited water supply that's replenished by rainwater, but that turned out to not be a problem at all. We bought a bunch of bottled water in Kona to conserve the water supply, but it rained enough that it was unnecessary.
My friend got a little chilly in the cottage, but there were plenty of blankets and heaters.
Overall, a great stay!