Not terribly long ago, there was a thread posted in "misc" by @calvinj pertaining to this very subject. The question was basically "can a good system sound good in a bad room?"
And I would say that basically it can, but I have no doubt that it would sound better in a good room. But I don’t see how a good room can make a bad system sound good.
I am also kind of getting out of the reading on this site that near-field set up starts to take the room out of it, and maybe that’s my saving grace, because with good source material I do feel my "good"system" (which is relative) sounds good (also relative) in a bad room.