Based on what I know about square footage, your room is roughly 13 x 9.

My room is slightly larger and I use this:

http://www.walmart.com/catalog/produ...uct_id=5131254

It does the trick, keeping my room around 55% as the space heater sucks out all the moisture. The bad part is I have to fill it every day, but I wanted something small and less expensive. I've only had it for about a month so we'll see how long it lasts.