While I enjoyed my stay and the location absolutely cannot be beat, I would not recommend this unit to fellow travelers without two hearty caveats: you may have communication difficulties, and this unit is not appropriate for stays of more than ~4-5 days.
Communication:
You will not be renting this unit from the owner, but rather from a rental company called "Evolve". Evolve will not respond to messages exchanged on the air bnb platform. Rather, they send you many automated emails and direct you to work directly with a "guest contact". The guest contact is yet another party that you'll need to interact with, separate from the rental company and the owner.
The reason this matters is if you have any issues with your stay. It's difficult to get into contact with anyone and generally unclear who you're supposed to work with. I do have to say the guest contact was a delight (although a little underwater and slow to respond to me, but that's because Kauai is insane since it recently re-opened for travel and the local workload is sky-high). For my stay, the dishwasher was broken for about half my time there. Getting it replaced took a heroic effort on the part of my guest contact, but communication was challenging. Ultimately, I requested a minor refund to account for the missing amenity - and received no response from Evolve for a week, despite numerous follow-ups across all channels (directly to Evolve via phone, to the guest contact, and via airbnb). I'm finally in discussions with them regarding this now and hope to reach a mutually agreeable resolution. I'd hoped to include that resolution in this review, but unfortunately Evolve's communication moved too slowly for me to be able to do so.
Long-term stays:
This unit includes no cleaning supplies (e.g. vacuum, toilet brush, disinfectant). There was a broom, but no dustpan. Since the unit is mostly carpeted, the lack of a vacuum meant the unit got pretty dirty in the first week and there wasn't much we could do about it.
That said, the decor is fun. The unit feels very tropical and puts you in a vacation frame of mind. The beach is a 3 minute walk. The unit also includes access to the Poipu athletic club across the street, which has a gym / pool / water slide / restaurant.
If I'm being totally honest, I'd suggest staying at a unit at the Kiahuna Plantation (it's an absolutely awesome resort!) - but try to find a unit that you can rent directly from an owner, or consider booking directly with the Kiahuna resort themselves. If you book directly with the resort, I believe it's more of a typical hotel stay and comes with cleaning services.