Location, location, location!
But much, much more. Melody and her place provided us with an excellent first stay in Hawaii. She was very responsive to any questions we had before and upon arrival, and she or her husband checked in with us casually to make sure all was fine, and it was.
The unit is very well appointed, from quality cookware to linens. In addition, Melody has provided extras like pool towels and a cooler. The facility was very clean and tidy, and we had no problems.
Finally, the washer and drier were godsends after our muddy hike up the Kalalau Trail.