Nani Kai Hale is an absolute gem of a property and great value for the money. I stayed here with my wife, parents (70+) and kids (7 & 13) and they all loved it. Its beach acces with amenities such as barbecue, boogie boards, sun umbrellas and couches are simply awesome. If you are looking for a location close to eateries (Ululani' Shave ice, Kihei center etc.), shopping and right at the beach this is the place to be.
While the unit itself (602) that we stayed in could be better maintained (balcony door did not slide easily, there were some issues with the bedroom lights) Kelly and Michael were very prompt in adressing the concerns and personally visited to rectify them. As such no complaints.
The check-in and check-out were smooth and the beach next to the property is great for swimming. I would certainly recommend trying it if you are visiting with family.