We stayed a week with 10-14 yr old kids and they loved this house so much! Had dual outdoor showers, outdoor beds, Sonos, TV in rooms, all amenities, washer/dryer in garage, surfbaords, wagon, snorkeling gear, balls, etc. Kitchen was stocked with much more than most VRBO's w/ shampoo/conditioner/wash/beach towels/chairs/earplugs for roosters :)
Short drives to any activity around Kauai. Walking distance to Brennecke & Poipu Beach which offered boogie boarding, snorkeling in a cove or outside of it with oodles of sea turtles, watching 20-40 sea turtles sleep every night at Poipu beach, sea lions, etc.
Walked to Puka Dog and Brenneckes for dinners/lunch and also went to upscale Keoki's which was only 2 min drive. The walks on the beach for sunrise/sunset were breathtaking as you can walk to all the beachside resorts in the area. You could catch a luau there, dine out or take surfing lessons(which we did).
It was 20 minutes to Li'hue for Costco, groceries, Kalamaku luau at the Gaylords plantation, or malasadas at the Kauai Bakery and coffee.
We shopped/dined in Koloa and loved the lobster roll at Kengi Burger-large burrito size type sushi roll..yummers.
We hit Hanapepe (Lilo and Stich city) enroute to snorkeling at Salt Pond Beach and hiking Waimea and Ko'ke state park area. We did the river tubing at Kauai Backcountry Adventures. We loved the north side of the island too-hiked Haena State Park(need reservations months in advance), snorkeled Anini and hung in Hanalei