Product is bought for toddlers. Older child have no problem with the ladder. The small sister has difficulty. Product is advisable for 3 year-old and above. It was easy to assemble, just me and my husband finished in less than one hour. Smell of varnish/paint is a little strong at first but goes away after a few days.
We only had problem with the delivery because it was very difficult to contact shipping company because I can't speak Japanese.