Delivery: the bed was delivered within 24 hours of ordering and excellent service from the delivery man.

Constructing: you build the frame first, then the storage and finally slide the storage underneath. The instructions were very straightforward and it took me aboit 4 hours from start to finish -
Including unpacking the boxes - but that was me building it on my own. 

It provides an awful lot more storage than it looks, with deep drawers and a generous cupboard. 
I'd definitely recommend this bed and it's a great solution for a small room.