It's not all (or that many) lounges... For example, I know on Riker 2nd/3rd (dorm number changing from different counting methods) we still have both lounges. And the pool table. Oh, and more furniture. Which actually makes a lot of sense.
I believe it's the Tolley/Brown floor lounges (they've been made into triples), Hasleton and Baldwin... There are still plenty of places to lounge on the Drew campus.