I have a friend who attends Thapar and here is his insight about hostel C. Hostel C is one of the top choices for students to move into. Life here is much better in comparison to the other hostels. Here are some of the points for you to consider.
Hostel C definitely offers a better experience as compared to the other hostels. You are good to go with hostel C, it has a good balance of everything and you will not face that many issues here.