Instant approval from the cats
I had barely finished assembling before one of my cats checked it out. Fifteen seconds, and he was making himself comfortable in the hideout.
Fairly easy to assemble, heavy (but it is clearly stated that it is, so that can’t be held against it), but once assembled it’s fairly easy to push around without damaging the floor. It’s sturdy and stabile, and the colours are nice.
Highly recommend it for heavy and/or older cats.