Two student rooms in the centre of Florence

We are two female students from England called Siobhan and Louisa, we are non smokers and are looking for immediate accomodation in Florence for a minimum of sixth months. We do not wish to spend more than 500 euros a month each, please contact me with any availabilty. We would prefer to be in the historical centre of Florence, we are also more than willing to share accomodation with other students who are looking for a flat in Florence.