I had a great time in Waianae! It's the perfect place if you're really trying to relax. It's away from the big city, but Oahu is small enough that everything is fairly easy to drive to outside the rush hour commute. It's about an hour drive to the North Shore, and only 25min to Ko'Olina which has some more upscale restaurants. The listing had everything we needed, and the parking spot was great to have. I worked from the listing, and found the WIFI to be fast. :) We went in February so the waves on the west coast were a bit too rough, but there are plenty of bays nearby to swim in. Po'kai Bay is kid friendly and a 4min drive from the listing. The listing has a pair of boogie boards and snorkel gear which can cost $20 each to rent elsewhere. Other reviews already talked about how great the listing and Breeze are, so I'll give some recommendations to visit below instead.

Food:
1.) You HAVE to go to Kahumana (in Waianae 10 min drive from the listing). It is a non-profit farm-to-table cafe. Open Tues - Sat for Lunch: 11:30 - 2:00 and Dinner: 6:00 - 8:00. Go during the day and walk around the garden. The food was delicious!!
2.) Stop at the Highway Inn in Waipahu on your way to the listing from the airport and pick up a poke bowl. It's a hole-in-the-wall joint where the locals go. Nothing fancy, but it's a great stop on the drive to Waianae.
3.) Monkeypod is a mid-scale restaurant with live Hawaiian music. Go for happy hour when the sun is setting. It's a little touristy, but their drinks are great.
4.) Coquitos is a Puerto Rican restaurant. 2min drive from the listing and BYOB. Take a bottle of Sangria and order the sweet plantains and habichuelas (kidney beans) side dishes.
5.) Sunset Cafe. 3min drive from the listing. Go when there is live music Thurs - Sat evenings. Happy Hour from 2-6pm. It doesn't look like much, and the food isn't great (bar food), but we went to hang out with the locals and watch the basketball game on the large patio while the sunset with beers in hand. Take a light jacket if you'll be there in the evening since the winds can pick up on the water.

Hikes:
1.) Ka'Ena Point. 15min drive north of the listing. Very easy walk along the coast and it took about 2 hours round trip. Go just before sunset and take a flashlight in case you walk back in the dark.
2.) Three Peaks (aka Olomana). Hour drive from the listing and on the other side of the island. Difficult hike for experienced hikers but so worth it. You hike through a jungle to a stunning view. Took us 2 hours round trip to the first peak, but we are very fit.

Enjoy!