Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mattress Genie review

I bought this as a birthday gift for my elderly aunt. I was a bit skeptical that an air mattress-type unit could lift a queen mattress but it did it, and it did it well. The maximum incline, while not upright, is quite steep and is great for TV watching. We ended up buying another for my mom.The only downside is that it is quite slow to inflate and deflate, and is noisy during operation.