It was our first time on Kauai and we had a wonderful stay. This property was perfect for exploring the whole island. The location is extremely convenient -- only 10 minutes from the airport, the Wal-Mart and other stores in Lihue, and 10 minutes in the other direction to Kapa'a with all the stores and restaurants there. It took 45 minutes to drive to Waimea where we caught a boat tour of the Na Pali Coast, 45 minutes to drive to Hanalei Beach, and 30 minutes to Poipu. One day when we were returning from Hanalei there was an accident which shut down the main (and only) road back for HOURS, which wasn't a problem for us as we just spent more time in Hanalei, but if you stay on the northern side of the island and that happens, you will be in trouble if you have to catch a plane.
The unit was in a convenient location on the Wyndham Kauai Beach Villas property, directly facing the lobby entrance of the Kauai Beach Resort with all its amenities (pools, water slide, restaurants, bar). As others have noted you cannot swim at the beach there (rocky and strong currents) but we did spend some time walking along the beach and just hanging out. There are so many other beautiful beaches all over Kauai that you definitely won't miss out!
Check-in was super-easy in the Wyndham lobby, even though we arrived late in the evening, and they were very accommodating when I asked for more laundry detergent. They immediately gave me a new coffeemaker when I told them ours was broken (turns out it wasn't, it was just user error). The pool and hot tub area at the Wyndham also has a hydration station to refill water bottles, which we appreciated and used quite a bit. Nice little amenity and good for the environment.
The unit was advertised as not having air conditioning, which we were a little apprehensive about, so we were very pleasantly surprised to find there was a ductless A/C unit in each room, which we could control ourselves, and these kept it nice and cool at night.