Indore is no small town but not a metro either. So if you are looking for a visa lounge, mastercard lounge, diners club or a priority pass lounge, you are up for a disappointment.
However, there is a local restaurant and lounge at Indore Airport called Saptagiri.
It’s not free but not expensive either. There are comfortable sofas as well as regular resturant style tables and chairs. You can watch TV, have tea coffee and order from breakfast items like eggs, upma, dosa etc to lunch and dinner. And it’s priced reasonably.
Wish you a Happy Journey to Indore 🙂