My wife and I enjoyed our 5 night stay at Margaret's place. Of course, its location in a friendly small town on the beautiful island of Kauai has a "halo effect": it would be hard to not any lodging option there.
Positives: Communication with Margaret was excellent in that she was a pleasure to correspond with and always responded quickly. It was nice to have a kitchen and the wifi worked well. We did not use the outdoor screened area much but it was a nice extra. The common area boasts the most modern washers and dryers I had ever used (and are free to use, along with liquid detergent). Finally, we did use the old beat-up cruiser-style bicycles on the ocean-front paved path every day.
So-so's: The apartment is much smaller than it looks in photos. The location is fine for walking around during the day but the road leading in has little illumination at night. The apartment kitchen has lots of what the owner terms "critters" (crawling bugs) so do not leave any food out at all.
Negatives: the television/cable set-up is very difficult to work out. We could never figure it out. Of course, we really did not go to watch tv anyway but simple instructions would have been nice. The biggest minus were the toiletries: very cheap bars of soap and shampoo were provided. We went grocery shopping for both.