Complete Review of the Sofa:
Assembly - SUPER Simple. It's a 2 piece that is easily put together when you align the metal pieces. The top portion of the sofa where the cushions go has a velcro, so it's easy to put in place and they stick really well! 
Feel - I love a sofa where you don't feel like your being sucked in and will never get back up. The feel is comfortable and just right. 
Color - The grey color is beautiful, just as described. 
BONUS - The ottoman opens and serves as a storage!