this is a great space saver. The only reason it’s getting a 4 is because the desk holes did not all align with the screws so only the back side was screwed in. I have to contact customer service to see if they send a replacement. We figured out the desk part came crooked that’s why they didn’t align. Other than that it’s pretty great. Yes it wobbles when you go up and down but not to the degree It feels unsafe.