On a previous coach, ours was tucked under the captain chair and covered by the chair-skirt. It was also semi-recessed into the floor under the chair, so as to be almost invisible - it looked like part of the chair mechanism.
Cleaning the carpet for the first time is when I noticed it. Asked the dealer about it and he said: "Safe? What safe?" He'd been selling that model for several years, and I was evidently the first one to discover it. It was never mentioned in any of the literature, either. The downside is that the key was the round almost-universal "RV Key" that opens everything.
My point is that I know you're quite handy, Jake, and thought this might be a good DIY location to consider.
I already built mine in another place on this coach, but if I was to tell you where it was, then I'd have to....