Save the least crowded, most photogenic beaches for your last day, since they take a bit more effort to reach — exactly where a buggy beats a scooter, since you can actually carry towels, a cooler, and your friends' beach bags down a rough access road without anyone falling off the back.
Morning at
Melasti Beach — turquoise water, a dramatic carved-limestone entrance road, and (unusually for this coast) an easy, flat, free parking lot right next to the sand. Good swimming, good photos, minimal drama.
If you're up for a short hike,
Green Bowl Beach is 320 steps down a shaded staircase to a tiny, secluded crescent of sand between the cliffs — pack water, there are a couple of warungs at the top for a cold drink once you're back up. For something even wilder and less visited,
Nyang Nyang Beach] is a long, wide, nearly empty stretch of coast with genuinely epic cliff views — it's a proper trek down, so this is a half-day commitment, not a quick stop.