Cats love it but the plastic connectors are rubbish.
My cats were excited watching me try to assemble it but their patience ran as thin as mine did with the fiddly plastic connectors that don't connect properly. The bottom ones are also located just far enough in that you can't use standard pliers on them to try to force the connection which added to the frustration.
For the price, I guess it's ok but I would have preferred to have paid a couple of quid more for connectors that do the job.