We are a family of 4 who stayed here (2 adults and 2 toddlers). It worked out perfectly for our family. I liked that there are 2 levels so when our kids were sleeping we could be downstairs without disturbing them. The place is well stocked. We bought food from costco so we didn't have to eat out every meals, and there was everything we needed- pots, pans, dishes, utensils (even tongs for basic grilling), and spices. Don't forget to look above the stove because there was oil, vineager, and some other things there. There are also sand toys, mats, beach chairs, and umbrella that were so helpful on our beach trips.
The unit itself is in a really nice location. The ocean and golf course views were amazing. We made use of the free shuttle a few times to take us to the nearby beaches and restaurant Sensai (sooo delicious). Kapalua is a little further from Lahaina town (because there are more food options there) than I would have liked but, overall, our family was so pleased with the place.
The hosts were very responsive as well. The coffee maker wasn't working so they brought a replacement one pretty quickly (in a few hours if not less).
We wouldn't hesitate to stay again.