Overall, it's just OK. The particleboard quality leaves a lot to be desired - I am fine with particleboard but I want it to last past assembly. We had two areas where tightening the screws in the back of the piece during assembly broke the particleboard due to the pre-drilled dowel holes not being deep enough. Luckily, it did not cause any structural issues and the damage is only visible in the back.

Another thing to note is that the top two long "shelf" layers are only supported in two spots (along the back and the ends) which can lead to slight sagging if decor items are placed in spots away from those supports. It does not sag badly, but it would be enough to notice if you had other visual "lines" around this piece that are level, as it might obviate the sag in comparison.