Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works but Has A Major Problem

I brought this distiller in the hopes of replacing the use of bottled water. Unfortunately I had to return the distiller. When I first used the distiller it produced, after aprox 3.5 hours, water with a strong metalic taste. I can't stress this enough. I could not drink it at all. But I thought that perhaps it needed a couple of uses to eliminate this awful taste so I tried again. Five times! It didn't work. The company suggested I distill with 2 cups of vingar mixed in with the water. It did not work. I then decide to return it. The company was reponsible enough to give me a full refund. I thank them for this. If you are looking for a distiller, and don't want your water to taste like a can, this one is not the one for you. I gave it 1 star because the machine did work and produced distilled water but with a big flaw.