Beautiful bunk bed. Seems to be sturdy. My 8 year old and almost 3 year old love it. We have a 6 inch mattress on the top and 8 inch on the bottom.  I am however going to get a bunkie board for top bunk for extra support. I give it 4 stars because some of the wood pieces came dinged and scratched when taking them out the box.  If there was an installer available I would have used them to put this bunk bed together because it took forever for us to put together with 2 and sometimes 3 people. A screw didn’t fit in one area when installing the stairs and unfortunately it ended up splitting the wood a little. Overall it’s such a cute bunk bed, but if you can get an installer, get one.