two sisters looking for a room in Rome

We are two sisters from Madrid, but we live in Valencia, we are 24 and 26, we want to finish our studies in Rome, and learn a new language. We are interest in a flat or studio, we want to live together so we can rent two bedrooms in the same flat or a double bedroom to share. We would like to be in the more centric zones, or at least near the station of Termini. We have been there for holidays and more or less we know the city. If someone has something like this please we will be very thankfull if you contact us. Looking for somewhere to live its very difficult. Carolina