Fairly easy to assemble.  Took me 1.5 hrs to complete.  My wife and I are very satisfied so far with unit but I gave it only four stars because the flame height is lower than expected, even with the highest setting and the "burning embers" dim and go bright all together- would have been more realistic if they randomly did so.  Don't misunderstand my review, it is a well made and sturdy unit and it is easy to operate - just my opinion on the above.  We do enjoy the ambiance created.