Kruglik is a small village 10km from Kiev with beautiful and maintained clean lake surrounded by forest. It's a nice spot where you can spend weekends with kids on the beach.
You can park near the lake, relax, take a swim and then try search for the cache.
During WW2 line of defence was going via Kruglik and you can find lot's of nice historical sites, like well-preserved dots-museums at below locations.
50.2917023N, 30.4881878E
50°19'13.98''N, 30°23'16.44''E