I was standing in Jaipur Airport from about 5 AM to 2 PM waiting for a delayed flight in Fall of 1997. Have to say, it was one of the nicest places I found in Jaipur. definitely the nicest airport I’ve found in India.
Brand new, I think, nicely air-conditioned, sparkling clean ( for India) , nice little gift shops, decent toilets, and completely empty for much of my time there. Unfortunately, molded plastic seats so it was hard to nap, and not much selection in terms of food. I think just a little stand or two. no proper cafeteria.