I thought the base would be able to store boxes that are a little deeper - but the top 10cm or so is out of action due to the frame supports - I think the boxes I have under there are about 20cm deep.

Unlike other ottoman beds I've seen, there's only a fabric base - with the items resting directly on the floor.

However, it looks great and can fit loads underneath it. The slats are great as well - I did think I was going to have to replace my old mattress, but on the new frame it feels much more comfortable.