I really like this humidifier because it's smaller than all of the old ones we owned before. The design is also modern and sleek which I really like. The one huge plus about it is that I can actually reach in the tank to clean it because the opening is big. HOWEVER, the only reason i am giving it a 4 stars is that although I can generally clean the machine easily, there is one part that I can't, and that is the tube where the water comes out. It doesn't detach, but to avoid any build up on it, I just dump out the water when not in use and let it dry. And so far so good. Plus it comes with a 5 year warranty so if I do have issues with it, I can call the company.