Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A machine with split personality

This machine makes a great cup of coffee when it's behaving. The carafe keeps the coffee hot and never burnt tasting.I must say we rarely use the grinder. A pain to clean all the parts even when you don't use the grinder. But the most irritating characteristic of this machine is that you never, ever know when it's going to overflow all over itself and the counter - ruining the entire pot of coffee. Just as another reviewer stated...it will do it 2-3 mornings in a week and then go another 2-3 weeks before doing it again. And yes, we use the same grind each time, same brand of coffee, same amount of water and always place the filter basket as the instruction booklet warns. We've cleaned up our last mess today. We're getting another machine.