Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Mixed bag

We've had this unit for almost a year now. It does do a good job of keeping the humidity at a comfortable level (especially on the high setting). However, I have 3 main issues:-The unit is randomly noisy when the water is released from the tank into the unit's base. It sounds just like the office water cooler (GLUB GLUB GLUB). Because this happens randomly throughout the night, it often disturbs our sleep. You can get used to it a bit, but we couldn't get by without having another fan on making white noise to cover it up. Your milage may vary...-It says it's easy to clean, but I find it a pain. The ionic silver stick doesn't really work that well, and getting all the little nooks of the base cleaned it rather tricky and time consuming.-The tank that you fill up is (as others have said) awkward and messy.