A little too early to fully review, but feel it's important to quickly note that it's not 66" wide, it's 72".  This is a large discrepancy, especially if it's a narrow area you're planning for.  The deck we purchased this for is 72.25"... just barely fit!
But it does fit and looks great. Took a couple hours to assemble, but we worked slowly.  Our kid is already enjoying the 'new outdoor room'.