Experiences with IndiGo

Currently I have booked two flights with IndiGo from Europe to Indonesia with a layover in Mumbai. I heard from a coworker that IndiGo was a bad experience. What should I be prepared for? Are the seats small? Should I prepare by bringing food and water and a blanket on the plane? What will generally be provided? Normally I fly intercontinental with Turkish airlines, which is usually pretty solid. What are your experiences?