We thoroughly enjoyed our honeymoon at AvantStay's Hale Moana. The condo is beautiful and spacious, with comfortable beds and furnishings, great bathrooms, a fully equipped kitchen, and lots of thoughtful amenities. The lanai is big, and has great views of the ocean, beach, and the pool below.
All that said, the best feature really is the location, with one of the Ko Olina lagoons pretty much exclusive to this condo's two-building community (compared to the one next door shared by the Four Seasons and Disney's Hawaiian Adventure). The condo property and and amenities are fun and family friendly, but way more mellow than the neighboring properties...which we really appreciated. The nightly rate may be a little on the high side, but it's worth it.