Dana, I’ve been in this spot twice now. Daniel’s family will often ‘stop over’ and spend the night with us in WDW. On two occassions Daniel has had to use the pull-out & the first time it was SO comfortable. Like DT said, it was a THICK matress on a platform that pulls out of the couch, no bars. BUT, the second time, we we’re in a room in the Springs building closest to the bus stop & it was a WHOLE different pull-out. The thickness of the matress I would liken to a Kindergarten nap mat & it was TERRIBLE. So much so that Daniel’s sister went & stayed with her parents at AKL instead of with us 'cause nobody would sleep on that thing. I don’t know if this one time was a fluke or if there are two different pull-outs that occupy different rooms in SSR. To be honest, I would get your room assignment & if you end up with one of the crappy ones don’t hesitate to contact the front desk or management. One of the great things about SSR is the CMs are ALWAYS very helpful.
I hope you get one of the thick comfortable ones.