Bought two for my 10 year old and 12 year old sons.  Paid someone to assemble the beds.  Feedback was that the quality is excellent and the beds are very easy to assemble.  They look great and my sons love them; the height, the storage and the look.  

The storage unit is separate, but for our convenience we have now attached it to the bed to stop it moving.  Works perfectly.  The storage unit is not the full width of the bed, which means there is actually more storage behind the unit, possibly for those items that you do not need frequent access to.

One of the hinges for the cupboard was missing.  Simply by clicking through 'My account' I was able to note the missing part and a new one was with me within 48 hours.

Overall am very impressed with the service by Wayfair and will happily use them again.