Do what you like.
Run the floor in the room one way, and down the hall, the other if you would like. My living room is 30x24, and we ran the floor parrallel to the 30. The hall is also running the same direction, and is about 42" wide, but it looks just fine. That hall is not very long, because we took out most of that wall to give us another entry to the kitchen, which is now all bamboo too, and running parralell to the living room. It looks good enough to stop people in their tracks when the come in the house.
Play with it. If we had turned ours the other way, it would be about 50+x30, when you include the kitchen, so we are technically going parallel to the short wall, but it looks very good and even a little bit dramatic.