I don't like that I'm saying this but I'd probably have to go with prison. I don't think it would take long before I go stark raving mad up in space. Sure, the first few days would be cool as you ride the euphoria of "Wow, I'm in space! Look at all that vast nothingness! Look at all the lights on Earth! All of man's individual problems seem so insignificant from up here." etc etc However, it wouldn't be long before the quietness and the solitude would push you over the edge.
Sure, there would be a lot of unsavory characters in prison but at least you would have social interaction and enough room (in the yards) to do some physical activity.
A year is a very, VERY long time to spend in an enclosed area when you have little to no means to entertain yourself or keep busy.