After my previous experience with a Wayfair couch, I am keeping my share of caution, which by the way it was delivered (wrong address and poor conditions), I am right to be. 
As for the sofa itself, the assembly was relatively easy, and it was so light. 
In quality terms, I only have it for two days, and it is hard to tell if it is going to be a good long-term deal, so I am going to describe how it has been so far. 
Seat cushions are pretty firm, and it looks like they are made of only foam, so I guess I won't have springs poking me this time; The material is very soft velvet, very nice to the touch; the head support is a very weird feature, it does not have anything to hold it, it is only a metal thing that you place between the back of the sofa and the back cushion, so it moves/slides. 
Overall, the couch does not look very sturdy, but I hope it lasts longer than the first one falling apart in less than a year.