My 5 yr old loves his new bed. Husband was able to put it together quickly and easily with minimal help from me in under 2 hrs. We have an older mattress and a foam topper on so the top of the mattress was close to the railing. I decided to stick his rail from his old bed between the new rail and the mattress. I'm sure we'll be able to remove it when we get new mattress'. 
Highly recommend. Made of nicely finished wood and has a ton of space underneath.