Originally Posted by ecophoto

Air India has a lounge in the sterile international area. It is nothing to write home about, but has snacks, drinks and showers. We spent a few hours there on our last trip to the Conrad, and it was much better than killing time in the main terminal. The staff were super friendly and helpful, and insisted on us not leaving the lounge until boarding began on our connecting flight. I would rate it much higher than the Air India business class in flight experience.
I can't speak to any of the post-customs lounge options outside the sterile area.