Towel Ring first. I hated it in my Cedar Creek 36CKTS.
If you go to forestriverinc.com
and find the floor plan for Cedar Creek 36CKTS.
Then take the virtual tour of the bathroom and you'll see a towel bar mounted under the medicine cabinate above the toilet.
After looking at the virtual tour of your 33RL it looks like you should be able to mount a similar towel bar.
PS After looking at more pic's of the bathroom in your 33RL you might even be able to mount a towel bar off the bottom of the medicine cabinate.