It does the job, especially for the price of $400. Looks great set up in the kids' bedroom.
Note: the bottom bed allows a child to sit on it without hitting their head; not an adult, though. 
Also, the bed is a drop too big for a standard size twin mattress, leaving a bit of space on both sides. 
With that being said, it's great for an inexpensive bunk bed with a trundle.