Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great in theory, but that's it

I loved the idea of pouring the water in the front but it only works in theory. My coffee cups are all different sizes, so I use them to accurately gauge the right amount of water and then pour the water in to the maker from the cup. The channel you pour the water in is only about 1 1/2" wide. No matter how I pour, I miss the channel and the water goes everywhere. I even tried using a funnel once in order to get the water in the machine but that was ridiculous.My next problem was that it has a minimum of 4 cups of coffee. Even my biggest cup only comes in at 2 1/2 on their scale. So I ended up wasting coffee/water to get up to the minimum.So it's on a shelf, sitting unused.