First of all, I'm going to point out the amazing customer service at Wayfair.  The original bench I received had dents on the seat and back.  I called Wayfair customer service who immediately started the process of sending me out a replacement.  I needed this item in time for Christmas.  They were just super.  Aside from prices, this is what keeps me coming back to Wayfair.  
The bench assembly was very straightforward.  The instructions were clear.  There were QR links to videos.  I didn't use them as the written instructions were clear.  I built the bench in well under an hour with no annoying steps.
The quality of the bench seems great.  Its solidly built.  Not sure how it will last outside as I've only had it for a couple weeks.
My kids like to do their homework on the bench in table format, and the bench is quite comfortable.