Very well made!! I built this with my 14 yr old son and it is very sturdy.  The instructions are a bit lacking - We had to untighten many previous steps to get the pieces to fit.  It was frustrating - had that been noted in the instructions it would have saved so much time (and bickering LOL)!

I had 2 twins in the boys room and it was snug but the ceilings are low for bunk beds and I would not want my youngest that high.  The youngest is 4 and the oldest 14.  The 14 yr old was fast outgrowing his twin as well! 

This solved two issues - I fit a larger bed on top and was planning on putting a twin on the floor but I switched out my mattress and ended up putting a queen underneath.  it fits the long way - but it is squished in since it is memory foam I was able to get it to fit -  - my oldest can sleep top or bottom since both mattresses are bigger!

All in all - this was the only place I was able to find a low loft bed for something larger than a twin at a price I could afford!!