We stayed at Margaret's place for 5 days in March. It is a cute apartment located in Kapa'a which is conveniently located on the east side of the island making it a midpoint between getting to the north shore and south shore. It is located about 20 minutes from the airport and this made it easy to transfer to and from Lihue.
The apartment had all necessary amenities and was comfortable. This place can fit 4 comfortably if 2 people share the bottom room with a bed and 2 people share the top loft room with a bed. There is a sofa bed I believe but it might be a squeeze to fit 5+ people in the apartment. It is located next to shopping centers and several places to eat. This place provides a washing machine area as well as snorkeling and beach equipment for use. We also were able to use the bikes in the property to enjoy a few evening bike rides on the beach. I highly recommend this place and Margaret was always prompt with her responses!