Easy assembly for one and I am 66 yr old female. Very nice to look at and love the wood and color of cushions. Very different and appealing style.  The lumbar cushion is necessary as the seat depth is long for shorter people. That said it would make sense to have some way to attach the cushion to stay in place for comfort. I use it to rest my back on while rocking.
I read reviews about the back being too short. I am 5'1" and would agree as you will never rest the back of your head in this chair while rocking a child. I would also add that it rocks so far back so I had to add a stopper on runners to prevent from rocking so far.
All said it is stylish but not really practical for use in nursery or to rock a child for very long.