Take the kids to Bengawan Solo and spend a quiet afternoon strolling along the water's edge. There's something about being near a river that makes you feel calm and peaceful.
This flowing body of water is located in Sukoharjo. If you're sticking to a budget, you'll be pleased to know entry is free. When you're done exploring Bengawan Solo, look up some attractions nearby. Solo Paragon Lifestyle Mall, Hartono Mall and Mangkunegaran Palace are a few recommendations.