I have stated at another Staybridge Suites outside of Chicago and the fold out couch was *horrible*. So horrible that my then 9-year old would not sleep on it when it was folded out. I LOVED the Staybridge for everything else. I hope that the couch is more comfortable in Orlando!
I guess it depends on how many are in your party and what size suite you get, we have a king bed and 2 doubles in the 2nd bedroom for 5 of us so will not have to use the sofa bed as I agree they are never the most comfortable things to sleep on.
If you're staying out that way, I'd consider the new Hilton Parc Soleil. I've stayed in both, and the new Hilton is pretty nice. It's a Hilton Vacation Club. It's sometimes on lastminutetravel, with two bedrooms pretty reasonable.