Interesting I have never stayed in the Viewliner 1, accessible bedroom. But did buy a upgrade 24 hours before departure for a Viewliner 2 accessible bedroom. The biggest issue was the sink, it really is a huge thing, with the little closet that prevent me from fitting on the bed at night (6’6” or 2 meters) There was a tiny space for me feet to overhang and I just had to get it right otherwise I was not able lay down.
Other issues was the door was not working, and the vent in the door gave me a great view into the hallway, which of course brought in a lot of noises to the room.
Also the ladder for the top bunk was just place in the shower with out any tie downs. Just waiting for it to fly out and try to kill me.
One size does not fit all when it comes to the ADA. I do think the Viewliner 1 was a good design and would love to hear what was the issue that required a redesign.