Love this cat tree condo , it is sturdy & easy to put together. I purchased the darker grey , this color is awesome & the faux fur is soft . WORTH EVERY PENNY SPENT , MY FEMALE GREY & BEIGE TABBY, GOT RIGHT INSIDE ONE OF THE CONDOS/CUBBY & WAS RELAXING . MY BIG MALE MAINCOON, IS STILL CURIOUS , BUT HE WILL BE RELAXING SOON ALSO, MAYBE AT THE BOTTOM CUBBY/CONDO ... VERY HAPPY WITH MY PURCHASE, RECOMMEND!I love my pink cat tree and my furbabies love it too!! They play on it all the time! It was easy to assemble however the directions were not very helpful at all. However if I can do it anyone can!!! I highly recommend it!!My 3 cats love their cat condo and so do I. I've had it for 4 months and it's holding up very well. I like that there are 2 types of scratching material--2 cats prefer the sisal post; 1 prefers the cardboard ramp. There is almost always a cat sitting in or on it; they especially like the top level to do their bird-watching. It was easy to put together and is very stable. I'm now looking for a taller one to place in another room.This cat tree is a great size for what I wanted for my two cats. Took me maybe an hour to put together, but that's because I mixed up the placement of two of the cubes (I tried to really follow the directions but still somehow managed to mess it up). You build it from the bottom up, so for the cubes the bottom cube has an entrance at the front and right side (your right when facing you) and then then top cube as an entrance at the front and left side (your left when facing you). Hopefully this helps others putting it together! If the instructions were a little more clear I'd give it five stars. I also like that it has a strap at the back to anchor it and my cats seem to find it pretty comfy. Overall very happy with my purchase!The unit came well packaged and all items were in excellent condition. I found it fairly easy to assemble in terms of instructions and the larger pieces were well labeled. However, it does take some effort for one person because there are many pieces to attach. It comes with all of the hardware including the allen wrench, so you do not need any tools of your own. It isn't quite as sturdy as our previous unit, but it can be attached to the wall to prevent tipping. Also, we have a medium sized cat (probably 10lbs) so it works perfectly for her and she seems pretty pleased. Overall, I am very happy with this purchase and would look for similar items from this company again should the need arise.Great product! My cat loves it and uses every floor. My only critique is that the ball fell off very easily, it lasted less than a month.This was very easy to put together. I did it by myself! I was also very happy with how sturdy the final product is. I have had issues in the past with wobbly cat condos, but this one doesn't have any issues like that. My only complaint is that the fabric already had something stuck to it out of the package. It was a very small spot, so I just let it go; however, it made me think it had been used.