We are using this cat condo for our one VERY spoiled cat...but it would be equally fine or more useable for more than one. It is LARGE, but I knew that going in. Here are the highlights: 1. I put it together by myself in about 40 minutes. It could not have been easier (and I am a beyond "middle-aged" teeny tiny woman) 2. The cat was on it before I got a chance to finish putting it together. She loves it! 3. It is well constructed 4. Although it is large, it doesn't look bulky or "ugly" (I was concerned about that initially) One minor negative: Wish this manufacturer would have put the loops for the toys in more cat-accessible locations. Hardly worth mentioning!