Well today I couldn't stand it any longer - I pulled up all the old flooring, carpet etc and ready to put a new surface down.
I am in the middle of redoing the back room into an office and jackknife sofa. There was a queen size bed in there but it left no room for anything else. And to reach the overhead cabinets, you had to kneel on the bed.... Nope, I can do with a full size bed and stand up in the room, plus have enough space for a real desk for my stuff.
Pulling up the carpet has also led me to decide on using an epoxy floor covering that can be painted on which will look like terrazo tile flooring when finished. I'm counting on it being easy to clean, durable for high traffic (there's only one way/path to use to walk through the coach), and offer some structural integrity to the old wood floor. The place that sells it assures me that the bouncing and flexing will not be an issue.
We'll see how all this comes together...