It's worth stapling the stickers onto the surfaces so the cushions stay in place. Also, consider whether you want to put the cabin at the very bottom... I solved it by placing a kitchen stool next to the tree, so it's easier to climb up. Attaching it to the wall is a must!
Very nice cat tree, my cat took to it straight away, but fixing it to the wall is essential—the ceiling attachment is quite unstable. The tree is good quality, with sturdy posts and a lovely wooden hideaway.
The scratching post looks nice and matches the photos. The problem starts when you try to mount it to the ceiling – the manufacturer hasn’t really thought this through. I bought an adjustable cabinet leg on Allegro for 15 PLN, so now I’ll be able to install it with tension. If you don’t mind a bit of DIY, I recommend it.