Signature class ship SC suite *single* sofa bed?

I'm usually the third person in a cabin who winds up on the sofa bed.

I'm intimately acquainted with the comfortable fold down type (back and seat become the bed) singles on S, R, and Vista classes - including the SC Neptune suites. I've slept on the uncomfortable two person pull-out in various SA Neptune cabins.

And, I've wrangled with a Signature ship pull-out single in an inside cabin.

Can any other third persons out there tell me what I'm likely to meet in an SC Neptune on Nieuw Amsterdam?