I bought two of these for my grandchildren - they were a complete misery to put together - things didn’t line up well, the directions were not clear and so we wound up putting things together wrong and having to undo it and start over. It took about 6 hours to put the two beds up and I am an IKEA pro - I’ve put together tons of furniture.  Also, they are difficult to get in and out of - there is no space where to guard rail is lower by the ladder - it took some practice and coaching for them to be confident and safe using the ladder.  Also, making the bed is a complete pain - we had to tip the mattress on its side to get the sheets on.  Delivery was lightening fast - they arrived a day earlier than expected.  It’s a two person job to move them - the boxes are close to 100 pounds. 
All that being said, my grandchildren love them, it makes great use of a smaller room and the height is just right for them to feel grown but also to be easily tucked in!