Been here twice so far. Each time has been very pleasant.
Friendly staff, and decently priced hookah and they also allow you to mix flavors which not many hookah bars offer.
It was a bit difficult to find for the first time but its right next to the gas station and its a bit hidden and a bit difficult to spot so keep your eyes open. It's also not crowded like other places which to me is a plus because it can be quiet and consists of non-belligerent people. It's also brighter inside compared to other places and I personally prefer that. However, Insomnia's atmosphere doesn't really resemble the atmosphere of most hookah joints. It definitely seems more like a lounge.
The second time I came, the worker/owner(?) gave my girlfriend and I complimentary nuts and peanuts! =D Can't go wrong with munchies with your puffs.