My girlfriend and I stayed at Jon's place for about 10 days comfortably. It was clean and had everything we needed.
Jon was easy to communicate with and very prompt.
We found the car rental in the lobby area handy as well! We hadn't intended to use a car, but it was just so convenient so it gave us a chance to spend a day driving round the island.
We were in easy reach of Waikiki beach which we could either walk or cycle to via the public Biki bikes parked around the corner. The busses were also easy to get to to reach all the eateries around the city. We only used a taxi to get to/from the airport (which cost around $30).
Overall would certainly recommend!