Great bed! It took my a couple of hours to put together but I did it alone (Im a woman with not much building experience! lol) Its a good sturdy bed, I climbed up on the top bunk to make the ned for my son to sleep on that night and it held my weight. One thing I did add was a sheet of plywood on top of the slats for the top bunk. The slats just seemed like they would need a bit of reinforcement with my 8 year old son and 5 year old daughter climbing around up there. The plywood helped to distribute their weight nicely. 
Its a great bed that I see lasting for years to come!