It was fairly simple to assemble, all of the pieces were there and marked by letters, making the pieces easy to identify. The difficulties I found  was that the assembly manual had only pictures and no written instructions... We had to flip around of the boards at the end, and written instructions would have prevented that.
 
Overall it fits and suits our needs sufficiently. We use it horizontally underneath our mounted TV as a book shelf/entertainment center stand in our living room.