How long do you want to rent it? If it's a day or two, go to the Dongyuan Hotel in Beigang Village or CUHK Gezhiyuan (in the dormitory area).

My classmate has been to Beigang, and I heard that a bed costs 50 yuan, but the environment is quite complicated. Gezhiyuan is quiet here and the conditions are good. Just like a hotel, but a double room (two beds) with a student ID card in the university town costs more than 160 yuan. If you can contact the teacher, it can be more favorable, but a few days in advance. ...

Long-term rent is unclear.