I'm guessing a highschool wouldn't be big enough?
Cumberland Valley HS could work. And I could get it...cheap.
I got 1 day for free for the CV Open 2009.
And how exactly do you expect travelers to get there?
Harrisburg International Airport. Or trains.
The trains to and from Harrisburg are fairly nice.
The high school that I'm talking about is ~20 min away from the possible venue, and there are good hotels nearby. I'll do some searching for the best overall throughout the day, but accommodation for ~200 people could happen. Also, if you ask anyone that went to the CV Open, they'd vouch for the huge amount of space in the Cafeteria. On an average day at school, ~600 kids eat lunch there daily, and if that still would be too small, we have larger spaces yet such as a very large auditorium with a projector that we could use.
Also, I know that this may sound like one of those "omg, liek my skool is realy big and you guyz should haev the comp here" things, but from a logical aspect, it's a good location.
There are food sources really close by (Wegmans/Giant), hotels (again, looking over these today), and a good deal of cubers relatively close.
Also, if you're looking at this from a 'How much will it cost for the WCA' prospective, I do know one thing about my school that we could very much use to our advantage. They are over-run with pride. If we somehow convinced them that this would bring a lot of media attention, or show how their students are not only physically adept (our school has rather good sports teams, from what I hear), but also mentally, they would jump on this in a heartbeat, and would lower costs.
Edit:
Also, it's 20 miles away from a Cici's and 30 from Chipolte
