Thanks very much Lenny. I suspected that it was a pull out from the wall situation, because looking on the website there is a new model (starts with a k) which looks very similar but you can see from the pictures that they've changed the way the base works, so the back lies down onto the seat base but the seat pulls out onto its own feet. Hmmmm

Good to hear that the mattress is comfy. There's nothing worse than those sofa beds that are uncomfy seats and horrible beds!