we've just put our oldest( 4 this month) into a cabin bed - sounds like Marydeans with a pull out desk and draws/bookcase underneath. it's great! i was worried though as i knew my 2 year old would get up and play on it but i spent the first half an hour of it being made teaching him how to use the ladder and he's been fine - no accidents yet!

it's a really solid one and the rails are not flimsy at all - we got it from bedshed - they deal with the flat pac company or something like that - google cabin beds or kendal midi bed - i highly recommend them!

good luck

Julie x