It's solidly built and suitable for degus. Ours love to sit and sleep on the long ladder now we've put it next to the hayrack. At first they weren't sure as the clips to attach it to the cage are quite short so you need to be able to clip it on the sides rather than the roof if you want headroom.
The hanging toys haven't been used for climbing but they must be delicious as the hanging ladder was the first to go. You might find them used more with pets that like to climb but ours are more jumpers.