Yes, that's what I figured too. At the time, I assumed the cause of the fire must have been someone smoking in this bed. I later read that investigators had determined the fire was due to arson. Still it does look like the arsonist started the fire on this bed.
on Feb 28
Looking at this picture, I think you may have found the ignition point of the fire. The mattress has nearly completely furned away, but somebody tossed a blanket on the bed after the fire was out. I bet any pillows that may have been on this bed were completely consumed by the fire.