I found this site this morning
Campus Life Facilities Maintenance Request
I guess this is where you go if you want to request your bed to be lofted and other stuff like that. Anyway, if you go through the steps, you will get to a list of all the rooms in Balch. If you find your room, you will find out if it is a small, regular or large single. Doesn't say a lot about it, but that is better than walking in on move-in day to find out you have a small single, I guess.