Two girls (25 et 27) looking for rooms in Rome

We are two girls from Paris, and our company allow us to do remote work for 4 months every year. We chose Rome because we love Italian culture, and we're looking for two rooms in a shared appartment. 
I'm staying for two months but my coworker is staying for four. 
I'm ok with staying in a shared room but my coworker would prefer a single room. We're not smokers, we're clean and organized.