We have a 2012 2104 but not the slide model. Our murphy bed has storage under the sofa. Not a drawer but the sofa seat flips up to access it. It's quite a large area though. We fit our 9x9 outside rug, two camp chairs, small outdoor end table, various crazy camp things like flamingos, camp signs, spinners that my wife likes, coffee maker, sodastream, etc. In lieu of the pass-through, the two front outside storage areas are quite small. I keep my leveling pads, BAL X-chocks, tool kit in one and stabilizer jack pads, hoses and my sewer drainage kit in the other. Under the dinette is another decent sized storage area too. I'm also decent sized and don't have much problem with the shower. It's tall enough but a little cramped side to side. We have not had any shower curtain problems. The shower head is terrible so replace that with a Bodyspa Oxygenics head and you will be a lot more happy.
2016 FR3 28DS
Past 2012 Forest River Rockwood 2104.
2016 Nights Camped = 34, 2015 = 21, 2014 = 22, 2013 = 24