Kristy and her family are super nice. We needed one night to stay in Kona near the airport - Kristy's place was ideal for that. Check in was very easy and straightforward, which was great for us since we got in late - about a $35/10-15 min taxi drive from the airport. The suite is also clean and spacious, quite comfortable for the one night we were there.
It is a quiet suburban neighbourhood so you would need a car to get around (i.e., don't expect a grocery store or restaurants to be within walking distance). As mentioned in the ad and by others, there are young children in the home above the suite, so be aware of that if you are a light sleeper or like to sleep in.