5 stars for the aesthetics. I personally did not put this together my S.O. did and from what he said, he had no issues with the assembly. 

1) aesthetics: wonderful. I love the open look. Fits in great with the modern industrial feel that we are going for
2) size: this is a beast of a bookshelf. It's 6ft long! So make sure that you have plenty of space to accomendate otherwise the space will look crowded. 
3) construction: wonderful. I was slightly concerned with the weight of the items on the shelves (I worked in a library where bookshelf warping was a common occurrence), but the shelves are constructed well! They aren't just planks but have inner support. The instructions say an individual shelf can hold up to 60lbs. We have a lot of books but no where near 60lbs (a lot are paperbacks, the heaviest content is maybe <30lbs with about 40qty hardcover books)