I work nights in a 30 bed unit and we eat where we can see the nurses station and rooms (like the dictation area), so we can watch our monitors and go do whatever is needed for our patients. My food gets cold a lot, but it's a lot easier this way. Our charge does not take patients so he/she is usually available if we do have to leave the unit for some reason, but we very rarely report off for breaks. Our breakroom is fairly far away from the ICU, and I personally am not comfortable taking breaks there.