We loved our stay in Volcano! Though it was rainy most of the time, Hale Mauna Loa was a perfect place for my family (4 adults, 1 child). The open floor plan for the kitchen/dining/living space was great and we loved the porch. The stained wood vaulted ceiling were beautiful.
For others visiting Volcano and staying at Hale Mauna Loa, the Tuk Tuk Thai Food Truck is parked just up the street from the house. Best value for food in the area, IMO. Other restaurants are pricey and/or hard to get reservations. But Hale Mauna Loa has a great kitchen - so shop in Hilo before coming and avoid the hassles of eating out in Volcano.
Also, we found you can walk from Hale Mauna Loa to the Thurston Lava Tube and Kileaua Iki Trail (our favorite) pretty easily. Take Old Volcano Road to where it ends at a walking trail leading into the park.