I have been living in Bangalore from last six year and visited this lake only once in March. It is an average lake with boating and swings.
The place is beautiful however it is not well maintained .The lake also possesses a beautiful garden adjacent to it with kids playing facility.It is really good for kids as there are many activities for small kids.
Charges are reasonable. Each ride for kids is 20 bucks and adult rides are around 50 bucks per head.One can spend hour or 2 max there.It is very easily accessible from any part of Bangalore.
It becomes lovers point in evening.If you want to go with your partner, go in the evening. you will find some food stalls near the place.Tt is a perfect place for bird lovers as well.