Student accommodation in Cork city is pretty expensive (horrendously overpriced near UCC). If you have your own transport, or the prospect of sharing a lift, you could far more easily find a room in a nice house, perhaps with other mature students, out the Model Farm Road/Ballincollig direction. You might even find someone willing to let at a reduced rate for 2 or 3 nights/week, if that's what you want?
Open an account on Daft.ie; it will allow you to [broken link removed] and/or track a number of properties that interest you.
Good luck with the course!