I am a student in Xianlin Campus of Nanjing Normal University. It's too cold to bathe in the dormitory in winter! Is there a bathing hall near Xianlin? Is the bath center!
No bathhouses are allowed in Xianlin area. If you want to wash them, you can go to Xianhemen or Yaohuamen.
Another simplest way is to spend some money. I once had a steaming card in that magnificent beauty salon. You can take a bath before steaming, including shampoo, shower gel and hair dryer.