I love this bed frame!  It is reversible - it’s not clear in the listing but in the instructions, it shows you how to reverse it so the long bookshelf piece ends up on the right side of the headboard instead of the left, if that’s something you want to do.  I would recommend a minimum mattress height of 7” so that the mattress doesn’t slide underneath the bookcase or headboard (there are gaps to the floor under both).  The mattress also sits on the floor, so consider that before buying.  My toddler loves it so far, overall very happy with the purchase!