Overall impression:
Very good, especially for the price point. 9/10 

Quality:
The veneered OSB looks good. The veneer itself seems thick and durable. The overall construction is well-designed and sturdy. Have needed to re-tighten a few bolts after cyclical loading. One weld for a bracket was crooked by about 10 degrees resulting in the footboard being angled slightly. The hardware used in the headboard to lock the paneling together is very visible when in the bed - less so for a casual observer. The corners of the metal on the footboard are rounded at the top two corners. 

Assembly:
As mentioned by other reviewers, the callouts in the instructions for what hardware to use is incorrect in a few places. Order of assembly made sense. It all went together easily. About 2.5-3 hours for one person to assemble.

Noise:
Quiet, unless a bolt is loose.