I just want to throw this out for everyone's information. Last year, my sister and I came to the convention. To make a long story short, we ended up having to find a room about four weeks before the convention. For $200 a night, we found a lovely two bedroom, two bath apartment one building away from the hotel. (The Irish Pub was in this building.) Full kitchen, washer dryer, Etc.
When it gets closer to the convention, I will be looking for something similar. (It is too early to do it now, can't book that far ahead.) Since it will be just me this year, I will be looking for roommates. So don't panic if you haven't found anything yet or couldn't get a reservation at the hotel. There are lots of options available.