Excuse the mess around the bed and my pup Zinger! Just got this bed put together today and I like it a lot for the most part, but have a few thoughts. You DEFINITELY need some sort of support under your mattress, 4 slats aren’t enough. But with our really thick hybrid mattress a standard box spring makes it way too tall and covers most of the headboard. I need a step stool to get in the bed. Even low profile is too tall so I’m thinking of just putting a lot more slats or a solid wood plank board underneath.