We loved this place! It's our second stay in the complex and we spent two weeks at Nancy and Ann's place in January 2019.
The location is great. You can walk down to Kam III for swimming and/or sunsets, and it's also quite close to our favourite beach: Keawakapu, which is great for walking (no pun intended), and decent for snorkelling. Just further down the coast is even better snorkelling. We do recommend renting a car for your visit unless it's very short, and there is free parking not too far from the door that comes with the rental. Some other favourites: the Rainbow Mall has a great shaved ice place and we liked the Thai restaurant there. Monkeypod has great sunset outdoor dining if you book ahead of time. We shopped at Safeway, which is laid out exactly like in the mainland US, making it very easy. Though prices are higher since you're on an island, so be prepared.
The space is very nice and comfortable. We slept with the bedroom window open, and did not need air-conditioning (pro tip: close the drapes when you go out for the day, keeps the place cooler), and the cross-breeze with front and back open was great. But there are two air conditioners in the place if it gets hot. The kitchen has all the basic tools you would expect and all the appliances work well. We loved eating breakfasts on the Lanai (and the daily visits from a gang of birds--we did not feed them), and we cooked one large meal so we'd have tons of leftovers to reheat during the visit. There were extra towels for the beach and some beach gear like boogie boards, chairs, and noodles. It looked like there was some snorkelling stuff as well but we brought our own and didn't pay much attention.
Nancy and Ann were great hosts. We had some questions and they gave us very honest answers about the place, so it was exactly as we expected when we arrived. They responded quickly to emails and communication through AirBNB. We'd happily book with them again, and if this place is available on our next visit to Maui, it will be our first choice.