Places to stay near St. John's college cork

Just wondering does anyone have any suggestions as to accommodation near at johns college cork. I'll be travelling from tipp every wed eve as Ill be attending a fetac night course that finishes at 10 which is too late to get a train home. Unfortunately I don't drive and since I only need somewhere to stay for the one night hotels seem a bit too expensive including train fares!! Any advice appreciated also not sure where to post this sorry.. feel free to move it