First, I LOVE this island. The size, style, the drop leaf side table, are the perfect fit for my kitchen. 
The 4 star review is for 2 reasons
If you look closely at the first picture, that would be considered the back of the island. You can see the screws and “panel holding” parts. This is such a nice island. There should be a panel that completely covers the back. I’m going for to use my black sharpie to help make the parts blend. 
Second putting this island together takes A LOT longer than 120 minutes. This took me SEVERAL hours! It is achievable, you just need to take your time and carefully put it together. 
NOTE TO MAKER the screws in bag E and F look a lot alike. Possibly consider putting them in bag A then bag F. Just not next to each other.