I'm 5'3" and was terribly uncomfortable in the seat. When it was fully reclined, I felt like I was in a coffin and my shoulders were severely cramped by the shell. I tried to raise my knees to a slightly bent position, but couldn't because of the top of that end of the shell. I was finally able to get comfortable enough to doze for a couple of hours by laying the duvet on the seat as a "mattress" and raising the head of the seat far enough that my shoulders were just above the level of the armrest.
The tray table was easy enough to get out, but putting it away was impossible. I finally shoved it as far to the side as I could and climbed out over it.