23 year old female looking for accommodation in Florence

Hi, Me and a friend are going to study in Florence for 8 months (from september 2015 to may 2016) and we are looking for a place to share in the Duomo Area (or close to it). We wanted separated rooms in a small apartment that would charge us 500 (at the most) with all utilities and services included (no surprises later!). If you have such a place please get in touch, we are very anxious to get everything ready before we go!