Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Humidifier....

I purchased this for my baby's room and because winters are extremely dry in Colorado. It is a lot bigger than I thought - that's not a bad thing. It is extremely easy to use... just fill up and push the on button. The instructions are very simple. One thing I like about it is that it is ultrasonic (it uses a metal diaphragm vibrating at an ultrasonic frequency to create water droplets. It is not loud, and also produces a cool fog.). No extensive cleaning needed, no adding bleach to the water, etc. It does the job great. There is one little thing that bothers me... the on light is green (it turns red if it runs out of water) and it is very bright at night. I like my room to be dark and this tiny light really lights up a room. I did cover it up with some electrical tape and now it doesn't bother me. Other than the light (which was an easy fix), I love this humidifier.