Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mediocre

Although the materials on this tree are decent, it is VERY unstable. The top perch is wobbly and when our cats try and jump down, the entire tree comes dangerously close to toppling over. However, it should be noted that the cats love the sisal scratching posts. I would advise spending more money for a better piece of cat furniture.