I'm not sure why the reviews are so bad. I went here for a 2 hour exam and I was checked in swiftly. The employees are very polite and helpful. I wasn't given my exam results right away as I was expecting, so one of them kindly looked into it for me and informed me that it would be sent to me via email. Though this was my only time, I wouldn't worry about the negative reviews. Arrive at least thirty minutes early with your ID and anything else needed specific to your exam, and you will be fine. They did offer noise cancelling headphones, but I did not use them, as it was quiet enough.
As a sidenote, they will call you before you come to ask a few covid screening questions, but that takes less than five minutes.