Well, there is enough room in those general areas for one or two person lifts moving between those three deck levels. So Putting something in isn't too much of an issue, it is just that deck plans don't often show the space limitations the way that cross-sections of the hull can.
Below is a sketch of those three decks. I have this printed out and have been studying the region to get a better idea of what would be there and how it might be organized. And at this point I don't have the lifts or ladders designated yet.