You'll find a number of affordable options in Satya Niketan.
Or if you are planning party in gurgaon, TFR will be the best place to do with your friends ..
For 10 people would be around 9 or 10 k and if you know someone who knows someone in TFR that will give you more discount or complimentary things.
If you like Cafe then you may visit Cafe Diaries
Whats your preffered location..?