Great and comfortable place to explore the Volcanoes National Park.
Best things: one cannot really stay any closer to the Visitor Centre. The area is very quiet and has a nice deck and a small garden, which was visited by Kalij Pheasant frequently. The place was perfect for us (a family of three). Nice kitchen, dinning area, covered garage for one car (nice to have as it was raining frequently). Nice washrooms with plenty of hot water. The deck looked really nice but we did not have much chance to enjoy it as we spent most of our time out hiking. Nice kitchen with all that you need to cook a full meal. Feels like home from the moment you walk in.
Everything worked perfectly once we got there. The only thing to keep in mind is that coming from Hilo one has to pass the Volcano Village and the Visitor Centre then pay attention to a brown sign indicating the golf course. Coming from Kona it is really easy to miss the entrance to Pi'i Mauna Dr. but it was not a big deal.
Highly recommended.