I'm sure it is great for kittens but not for older, full grown cats that weigh over 10 pounds.  The tree is too vertical. My cats don't have a problem going up but when they want to come down they are forced to jump from 4 feet up. Another problem is that the bed platforms are too small. 
This tree was meant to replace an older worn out tree but I now have both pushed together after removing the bed platforms from the old tree. They now have an easier way to get down at the cost of a lot of floor space.