It is light, convenient and a good height. It is super quiet and unobtrusive. It seems like the tensioner doesn't work. It makes a clicking sound when I turn it but there is not a difference in resistance.
The exerciser does feel somewhat jerky when peddling, no matter what the tension setting. The Yosuda under the desk exerciser that I used before the Sunny one was a lot smoother by comparison, but unfortunately didn't even last a full year.