Three 18 years old swiss-colombian girls looking for accomodation in Geneva

Me and my friends have just graduated from school in Colombia. As we are also Swiss, we decided to study in Geneva and live together there. The three of us have 18 years old and speak very good English, French and Spanish. Two of us are going to study at Geneva's Univerity; our other friend is looking for a student job, as she is going to divide her time between a job and music classes. We are very friendly, calm, studious and organized. 

The accomodation we are looking for is preferably a three-bedroom appartment, though a two-bedroom would also be fine. If possible, we would like to move in before September, as university's lessons begin in September 17.  We look forward to find an equiped accomodation near Geneva's University, where the three of us can live calmly and peacefully.