I recently had to travel from San Francisco to Chennai and back, and this was one of the airports in my itinerary. My general impression of this airport is that it needs to do a lot more to improve the hygiene in the airport in general and toilets in particular. The restrooms were smelly and filthy, and there was no soap/ toilet paper. In addition, there was water splashed all over the floor.
The waiting are was infested with flies, and was hot and humid. A very bad state of affairs indeed!