I had travelled with GO air about two years ago. I was returning from Goa to Mumbai. As I had to return on emergency basis, there was no other airline available. So I bought two tickets of GO air.
Right from check in to Luggage collection at Mumbai airport, it was a very pathetic experience.
Price is resonable, but there is absolutely no service provided. All we got was a very small bottled water. Which got over in a sip. Apart from that if you ask for more water, they ask you to pay for it.
Not at all recommended for long flight hours.