For the price, this is a great bed.  

My expectation when buying this: A bed that was not particle board, it would be inexpensive, and (with care) last a long time.

Note: using as two separate beds, not bunks.

The wood is OK, it is not a very hardwood, but certainly not a super soft pine or balsa.  The Stain/Finish is fine, didn't come off easily, and I don't plan to worry if it is nicked.  My expectations on quality were exceeded here, due to the price I paid.

Seems sturdy enough, and wood glue in the right places should help even more. 
The beds have not been abused yet, so time will tell how it holds up.

Happy with the purchase overall.  Would recommend to others not looking to spend a ton on a bed.