What's not to like?
Sand --- not sharp rocks and coral.
Warm, clean water that gradually deepens so you can actually swim, dive or float, and not just get your legs wet.
The beach is situated at an idyllic cove, free of pollution. And the best thing - this is Tinian! Which means - you can spend hours here and be the only person. Your own personal beach.
Like these two Tinian boys roughing it up in that clean, clean water.