Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I've bought several air beds from various manufacturers. I bought one identical to this one 1 1/2 years ago. It was comfortable but lost air after 3 months. I justified this as the user may have not taken care. However, I now believe its the brand. This one would not inflate at all. I will not buy this brand again. I've had great life from a better brands.
Negative

Good quality overall. The braket for the stem didn't fit my application, so I improvised, and mounted it behind the seat over the rear fender and low. Holds stuff.
Positive

Good for beginners or for those already on a spiritual path - as always another perspective gives you insights in areas you may have thought you had it all sussed or confirms something you had not quite got your head around yet. Forgiving and generous - a book to come back to.

Positive