900 is going to be tough finding a decent apt in this area. 5 years ago I was in Germantown for a year and the cheapest apt I found was 1100 for a one bed room, I'm no real estate expert so don't take what I say as facts. Try silver spring or Takoma Park like others have mentioned.
Also it's not the distance that makes the commute rough, but where you're located. If you were in Columbia MD which is also probably 20 miles away North of college Park, but that commute won't be anything like the commute you would have if you were to live in Alexandria VA.