DO NOT BUY! Atrocious! The frame itself is very heavy and sturdy but is very dangerous when assembled. The metal attachments that hold the bottom mattress section in place bent and snapped before I could even put the wooden frame on to it. I persisted and managed to get all attachments in place but as soon as I put any weight on it, it collapsed under me. Nearly breaking my foot in the process. Im just relieved it was me that tested it before placing my daughter in the cot. 
Ive had to drill through the head and foot board in order to secure the bottom frame but its still managed to come loose. We paid nearly £200 for this cot bed. Im disgusted! I do not trust its safe enough for my daughter to sleep on.