My 7 year old daughter is in heaven with this bunk bed. Her sleepovers have changed for ever. 
My friend is a carpenter by trade so I got hime involved in building it with me. It took us 3 hours. It wasn't too bad: if you've put anything from Ikea together then you'll be fine...
Bottom line...great and sturdy bunk bed with tons of storage, and a safe way up and down. Love it.