This was my first Wayfair purchase and in all candor, I was skeptical, but it was a great experience. The sofa is GREAT, and the lumbar support and seat comfort are both just perfect for me. The "assembly" is just installing the three upright seatbacks by inserting their slots onto prongs that extend upward from the sofa's base; there are no tools required, and it takes 5 minutes.   

Also, the delivery was smooth as can be, and the two gentlemen even placed it on the other side of the room for me, even though they could have by rights left it just inside of the door (yes, I took care of them, but the real point is that they did it without me having to insist upon it, so I was glad to tip them).