We had a lovely few days staying at Trudy’s place in Kona. It’s about a 15 minute walk to the main tourist hub along Ali’i drive, which suited us perfectly (close, but not too close), and there is a good coffee shop (Kona Coffee & Tea) and KTA supermarket within walking distance.
Trudy was easy to communicate with, replied promptly, and the check in/out process was very straightforward. We couldn’t get the shower very hot, and there were a couple of stains on the bed linen, but very minor complaints in an otherwise very comfortable stay.