We ended up returning the bed, sadly.  Visually it is so fun for our son. The BIG draw back is that the mattress/ box spring sits directly on the ground- no rails to prop it, and no place to put your own rails. As this is a child's bed, in our case toddler (and we KNOW kids can be messy and spill) it was not functional for our home. I did not want to risk his mattress being damaged. 
Thankfully Wayfair was great through and made the return process as smooth as possible, customer service was wonderful! 2 stars for the bed, 5 stars for customer service.