One of my friends studied at IIT BHU, he used to avail hostel facilities. According to him, the hostels were overall good but had one complaint with the allotment of students. Most of the students there preferred 2 students sharing one room rather than 3.

Here’s mentioning some points about the hostels.

• The Aryabhatta hostel is for freshers.
• Every room has good ventilation. 
• The windows opening outside makes the room spacious.
• Water coolers are present at every floor.
• All rooms are equipped with 2 almirahs, 2 beds, 2 tables and 2 chairs.
• Students can play badminton, tennis, etc. during their off time in the hostel premises.
• The big hall at Aryabhatta hostel has 3 messes. 
• The mess staff are well organized as well.
• Every furniture in the room is labelled with its respective room number to avoid misplacement.
• Each floor has a common bathroom and toilet.
• Wifi is also provided to the students.

Overall, the hostels here are very well maintained, the new hostels are better than the older ones but are comparatively smaller. To promote clean energy, solar panels are installed on the roof of each hostel.