I think you should have had that discussion with whomever you were speaking with when you upgraded to CO.
Whenever I call to enquire about CO or an upgrade, I have the deck plans out and am ready to check what is over, below or beside the choice of cabins available. In fact, I did not upgrade to CO for my upcoming cruise because any upgrades that were available were not in a desirable location.
I don’t have the CO number with me at the moment, but I would certainly be calling them and making a room choice PDQ!