The hosts, Steve & Jackie, are absolutely 5-star . They are very responsive and accommodating.
We spent the first half of our trip at a luxury hotel and stayed in this unit for the second half while we spent our days adventuring, and it was good for that purpose.
We enjoyed the location as a change of scenery from Wailea. It is extremely convenient if you plan to adventure in various directions around the island. Lahaina and Wailea are 15-30 minute drives (depending on traffic), as are the airport/north shore and the Road to Hana. Ma'alaea Harbor is within walking distance and has restaurants and things to do, and the complex's beach access is very nice. I would, however, recommend going back toward Kihei or Wailea or around toward Lahaina to watch the sunset, as the mountain blocks Ma'alaea from the spectacular sunsets you'll find elsewhere.
The unit is generally acceptable and as described, with a few minor drawbacks. The living area is pretty bare, with a single small couch and small television. For a two bedroom unit, it would be nice to have seating for two bedrooms' worth of people. The wifi is unusably slow--you can barely load an email, let alone streaming and downloading anything for the flight home. The air conditioner has two settings: Arctic and Off, and also needed a filter change. Finally, I'd bring your own toiletries as those provided are quite cheap. None of these are a deal breaker, but are helpful for setting expectations.
Look, you're not renting this place to feel like you're at the Ritz. It is a safe, clean space for you to rest your head in between days spent adventuring elsewhere on the island. If you set your expectations appropriately as such, I absolutely recommend this rental.