We loved our 2 weeks in this wonderful property.
The unit is nicely decorated, spacious and clean. We were greeted by a welcome package of macadamia nuts, cookies, granola and coffee. We cooked/bbq a lot, and found everything we needed was provided, including a dish washer! There was a cooler with ice packs, 4 folding chairs, boogie boards, a beach umbrella and beach towels. Coin Laundry is a few doors down, and they provided soap. There are shared bbqs around the property.
Pono Kai resort is beautifully landscaped, with a lovely beach, pool, hot tub and hammocks, and you can request use of ping pong, croquet, darts and other games. There are multiple restaurants close by, and the Big Save Market is a few minutes walk (and cheaper than Safeway.) Kapa'a area is convenient for exploring the island, sort of midway between the south shore and north shore. Each day we would check the weather forecast for Kapa'a, Princeville and PoiPu, and then decide which side of the island to visit.
Property managers were very accessible via text. We had trouble with the sliding screen door coming off the track. Someone came out to fix it within an hour or so.
Slight negative - you hear noise from upstairs when the neighbors are walking around. It's a wooden structure, with poor sound barriers. We didn't find it too much of a problem. There are roosters crowing a lot; chickens are everywhere in Kauai! We found them amusing.