Just an FYI about CSR. Keep this in mind when deciding. CSR has motion sensors on the a/c units and when there is no movement in the rooms (like when you are sleeping) the air cuts off. Someone suggested you can call maintenance every 2 days and have them come to your room and do some kind of bypass on the motion sensors but I would not want to deal with that every 2 days for my whole trip. That is what changed my mind about CSR. We need a/c when we sleep.