We had an absolutely lovely stay in Kealakekua, and we would highly recommend Will and Mir's place to anyone else. It was really spacious for two, and it was sooo thoughtfully stocked including bug spray, a beach umbrella, snorkel gear, and even a yoga mat.
We LOVED the location of this place, because Kona was accessible, but we could also easily go south to the green and black sand beaches or down to the coast to snorkel and surf. We also loved pulling into the steep driveway each day because we got great views of the water at the top :)
Communication was super easy and they offered us a change of towels and sheets halfway through our 10 day stay. We never got any noise from the upstairs, and we loved when Goose (their small dog) would come out and say hi to us.
The kitchenette was perfectly functional for us, and the wifi was blazing fast. Heat was never an issue between the large windows and fan (+ the location means you get a lot of cloud cover and evening showers occasionally).
If and when we come back to the Big Island, we'd love to stay here again!