sammi6:
My dh and I stayed at ASMu last January and, sorry, we were not happy there. For more specific info, read my review (and read all the reviews) in the review section on the board, where you'll see lots of differing opinions.
For a happier stay than we had, I suggest the following: (1) request a room on either the 1st or 3rd floor of whatever bldg you're staying in. Rooms on the 2nd floor are particularly loud. (2) Also, a room with NO connecting door will help cut down on the room-to-room noise. (3) Do NOT stay in Country Fair, which is very very far away from the food court/bus stop, etc.
Another warning: the Pop Warner cheerleaders/football players are in WDW in December (around the 6th-12th, IIRC--check around for the exact dates) and I believe they stay at the All Stars. Someone posted their dates and locations--do a search and you'll find it. You'll want to request a room away from these groups.
A lot of people on the DIS adore ASMu. It all depends on what you need from your resort. If you just use the room as a place to crash and don't spend a lot of time there, it's okay. The room we stayed in was clean and mousekeeping was very good. Bus transportation was excellent. But a deluxe or a mod it isn't.
--miffy--