Super easy to assemble, and very beautiful. The little cats sit there almost all day, from the very first moment. One of them is constantly scratching it with her claws, the other not so much yet. They have really honored the nest-house and the top piece.
It is relatively sturdy and has wall support if needed. I have left it like this, and although it doesn't lean well against the wall, and even though the cats jump up and down with force and the tree shakes, it hasn't moved from its place.
I recommend it 100%.

Quality is fine and relatively easy to set up, spacious little house, I might have the most fearful cat because she didn't even honor it, she probably needs to get used to its presence first and maybe she will warm up to it now, time will tell.