We also have a CF-335 and mounted a 21" flat screen TV in the bedroom with no problems. Bought a wall mount from Best Buy, used six #12x3/4" FH screws to attach the bracket to the wall.
I don't have a TV in the bedroom (didn't want one) but the Dealer supplied one and mounted it in the living area above the dinette. It is bigger than the opening and has a strap behind it to wrap around it for traveling. I need to find a better way to store it for traveling without removing it each time.
I mounted a 21" TVin the bedroom of our CF335SS . I think you will find there is a 2x6 studthat runs behind where the sticker is, or close to it!. Not sure if it runs floor to ceiling. You should be able to locate it with a stud finder. Randy at Crossroads showed me the "blueprint". Hope this helps. We just spent a month in our 335 without issues and really enjoy the floorplan.
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Shadow the Wonder Dog
2012 335SS
2014 F250 6.7 CC 4X4 BLACK PLATINUM
Goon- </span>we have driven through Sarnia many times on the way back to Minnesota. Getting across at Sarnia/Port Huron takes the longest amount of time - allot of traffic goes across the bridge both ways.</span>