It's great! We're using it with our Queen sized Casper mattress (it's foam)
A few of the wooden plugs for bolt holes don't fit snugly, but all in all it seems great. Instructions were relatively easy to follow. Not quite on the level of Ikea's manuals, but the stickers included on pieces were very helpful.

The wood is solid and the hinges seem to be pretty solid.

4.5 stars...but I'll round up for now.