Allow a couple of hours to put them together and I highly recommend separating each of the pieces into labeled piles (especially the various bolts).  Many look similar with only a slight difference in length so you might end up using the wrong bolt.  Don't tighten all the way until you've got the whole thing put together because it will allow you to line things up better in subsequent steps. Following that advice from other reviewers made it an easy assembly. My only complaint is that the back piece of one of the chairs is bent so it won't lie flat.  I will call and ask for a replacement and see what happens.

Pros: Price, lays flat, thick cushions
Cons: Takes time and patience to assemble but doesn't have to be frustrating.