I am a student in Nankai. If there are many people, you can go to the Yiyuan Hotel in Nankai, which is a bed room. One night in 40 yuan per person. It is already the cheapest hotel in Tianjin. There are many of you, so one or more rooms are still reserved by you, which is very suitable. But if you don't make a reservation during the freshman registration period, I'm afraid there will be no room, so you have to make a reservation quickly.