It works great for our smaller bedrooms (up to 120 sq ft), as it's able to capture most of the moisture out of the air and minimize condensation on our windows. But it's not as effective in our larger primary bedroom (200+ sq ft), especially with 2 adults sleeping in there. I believe the rating of this dehumidifier is up to 100sq ft. 
Overall, we're quite happy with the product as it works as described. It's very quiet, and has a very compact and small look, so it's safe and inconspicuous in our room without it being a part of the decor.