My sister is a former NIT Warangal student. At the time of her admission, we ate at the mess at the college. Here comes the real thing about the messes. There are two kinds of mess facilities at NIT Warangal: Government mess and Private mess.
There are 3 private messes at NIT Warangal naming: IFC-A, IFC-B, IFC-C.
Overall the mess in NIT Warangal is far better compared to other NIT's.