Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Leaves a lot to be desired

I bought this because I felt wasteful using the cups in the machine at work, but also did not like the coffee used to fill the big carafe. This product sucks, though, and usually overflows and leaves my coffee mug a watery mess with grinds in it. I don't really recommend it, but I don't know of any alternatives that are worth purchasing.