Looking for a single room in Pittsburgh, PA

Hello, I am a visiting student at CMU since January and my current sublease ends this month, so I need a new place. - Private room with private bathroom - Budget: $600/month - Area: Squirrel Hill, Shadyside or Oakland, near a 61 or 71 bus stop - I am vegetarian and cook simple food at home I am quiet and usually in the lab until late. Short lease or sublet is also okay for me. Thank you for reading!