We stayed in the cottage, which is detached from the main house. It's just around the corner if you continue down the driveway, but it's almost completely invisible from the main house thanks to a hill and lots of plants, so it's totally private.
This property was up on a hill overlooking a coffee farm and the ocean, so the view was incredible. It was great to watch the sunset on the back lawn. It's situated off a side road among a lot of great coffee farms that you can check out.
It was also just a short drive (~12 minutes) to downtown Kailua-Kona. You will definitely need a car, but it's quick and easy to get around.
The property is also spacious and functional; there's more than enough room for two couples or a single family, and the kitchen is well-equipped with new appliances, etc. So it has everything you need.
Overall, I highly recommend this property if you're visiting in Kona for a short or —even better—a long period of time.