It depends on if you want to rent an apartment or just one room or can share with others with one room.
It is quite easy to rent for only one room. There are a lot of information about that online in the BBS of all the universities.
If you have friends there, you can ask them to rent one for you.
Basically the apartment there has at least two bedrooms. So if you want to rent such kind of apartment, it will cost you 1000 S$ about 5200RMB per month.
But I recommend you to share with others. It will be much cheaper. For a single roon it is about 350-400S$. Sure you can use the kitchen and bathroom.