Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What a let down

I ordered this product well in advance of Valentine's Day intending to give it as a gift. I finally received it last week and it doesn't work. I have it placed in a window on the 12th floor of a glass building in full blast Springtime sunshine and NOTHING is happening. The crystal is kind of cheesy too. However, I am pleasantly pleased with Marshall Field's return policy -- hence the 1 star vs. a 0 star.