I noticed this topic mentioned the transition sleeper. I took the Texas Eagle in May, and on the way back to Chicago was in room 21 in the transition sleeper. I also spotted something the other day that indicated that the Texas Eagle and City of New Orleans shared train sets, so I suspect they are set up the same way.
My recollection was my room was on the left side facing forward, and just up the stairway, although I may have been the second room back from the mid-point. The dining car was just aft of the transition car, so it was a shorter trip going to the dining car than on the trip to Texas when I was in the last car. There was a restroom with a shower on the right hand side of the car at the rear end. I don't recall if it was 8 or 10 rooms in the rear half of the car for passengers. There was a curtain that separated the front half of the car which was for the crew.
I noticed there was a recent post asking about floor plans for the cars. I know there is a site that showed floor plans for the cars on the Texas Eagle. I think that site is something like www.texaseagle.com although the only floor plan I have ever seen for the transition sleeper was on the passenger safety instruction card I saw on the train. It had floor plans for all of the Superliner cars, showing also where things like fire extinguishers, and exits are located. I would like to see that posted on the Amtrak site, as it would be helpful.
Going to Texas I was on the lower level of the sleeper car, and the rooms were similar, although one difference I noticed was the storage. The transition sleepers are all Superliner II, and instead of the really thin closet, they have a short coat rack and more space beside the seat for storing a small suitcase. In the restroom, I noticed that the flushing mechanism on the toilets was different on the transition sleeper (Superliner II) than it was on the regular sleeper car (Superliner I). I think I liked the Superliner II better.