One of the famous waterfall in Bentong is Chamang Waterfall. It about 10 km from the town center. The waterfall is beautiful by any standard with an area for swimming or just wading in the cool waters of the waterfall.
Good for makan2 and exploring nearby areas such as Bukit Tinggi and Genting Highlands. Small town with relaxed environment.
Good for quick getaway from city.
Nice bars and restaurants which may stay open later for you if there are very few people (which is usually the case).
There's the Chamang Waterfalls for sightseeing. Or just the market area for local food. Plenty of bank branches too.