Reviews for the Air-conditioned Retiring rooms aren't very encouraging. The roofs leak water and the flakes of paint keep dropping off. They are priced at around Rs. 750/24hrs and at similar rates you can get hotels close-by. Not recommended. Slots are 10AM-10PM, 10AM-10AM, 10PM-10AM.
PS: This is in stark contrast with the station premises which is sparkling clean.