"Athenium isnt that far (though more expensive I think), " The Athenium is about a four block walk from hart plaza. I stayed there last year for DEMF. I actually stay there whenever I don't feel like staying with the parents anymore. Anyway, it is a little expensive, but you can seriously house about 6 people in one room. The staff are pretty easy going about that sort of thing as well. Their rates have gone up since the casino opened though.
I'm not sure if the Greektown casino has a proper hotel or not. Two thumbs up for the athenium tho' jim http://www.mp3.com/zarathustra http://www.assasins.net