Looking for a room for 15 days or one month

Hi, 

I am a prospective student of the International Medical School of University of Milan. In order to get a student visa, I must show proove of reservation of accommodation for at least 15 days or max. a month, if possible I am looking to pay for one month accommodation (shared room or single room, less than 300 euros, for females only, in citta studi). If it is also possible, I would really like to get a reservation certified for this. 

thank you so much