I went to Ruh last week. it is a nice place to hangout with your friends. Good ambiance and good crowd. Though it was far from my place, but worth a visit. I strongly recommend people to try hookahs at Ruh!
They also have many flavors for Hookah, which is a good part as I have experienced that most Hookah bars in Bangalore dont have enough flavor options. Also they have a amazing service, waiting time is also less which is another worth a visit.
Give it a try. youll surely love it.:)