The beds took us roughly 3 hours to assemble.  I have pictures of nicks in the frame and also a crack in the headboard.  The slats are made very cheaply and definitely have room for improvement.  The beds are rated to hold up to 400 lbs., but with the slat assembly on the top bunk especially, I would not even consider putting anyone over 200 lbs. on there.  In fact, we are planning to put something custom made up there to make it more stable.  Our grand-daughters love the beds, but that is after we discovered all the imperfections.  I honestly thought that I read these beds were made in the USA, but they were clearly marked as made in Japan.  If I had known that before purchasing, I would have found different beds that were made in the USA.