If I remember correctly, the "mattress" is more like the three section pad on the sleeper sofa. So it cannot be removed. And the chair is too heavy to move to another space.
When we toured a few weeks ago both the sofa and chair sleepers were three memory foam pads attached to the panels, so that they fold out and meet up instead of ending up looking like a giant taco like most sleeper mattresses. ;-)
If I remember correctly, the "mattress" is more like the three section pad on the sleeper sofa. So it cannot be removed. And the chair is too heavy to move to another space.
Not sure why you're asking but if it's because your child is young and you're worried about him/she falling off...we bought 2 large pool noodles (had a rental car) that we put under the fitted sheet on each side and it kept our twin grandsons quite secure (in the regular pull out sofa). We then gifted the noodles to a family at the pool before we left, so all was good.