its 3.5/5 for me.
The manual is there but it's not that useful. I watched some youtube clips and that worked for me. 
after it was done, I felt it was not entirely straight. 

Shoe size wise, I wear 8.5 and 2 shoes can not fit well in one rack. it's one pair of shoes and one pair of sleepers - mix it and it can work for you. 

quality wise: it's okay and it does the job.

it took me 50 minutes to fix this. all the parts were there, in fact, I got extra parts. 
Not all the shutters shut well, it kind of hanging - but it's fine.