This is a very unknown spot, and I intend to let it be that way. Thus, not revealing its location. If you are really curious, I will give you a clue. Outer Ring Road roughly makes a circle around Hyderabad city. Look for waterbodies near the path laid by Outer Ring Road which does not end with "Cheruvu" (which means lake in Telugu). Fun fact - the place is not officialy named. It has been marked on Google maps by some explorers with a non Telugu name. If you find it, do not publicize it! Already I saw some people littering around irresponsibly. Still this place is relatively clean for now.
Do not spoil it!