This Condo House was easy to assemble. I did it by myself in about 25-30 minutes. Grabbed the wrong screw a couple times but figured it out. Instructions could be a little more detailed, but with common sense you can figure it out. I was thinking about getting a shorter one and now wish I did; it's just a little too tall for my window. It took my cat a little while to warm up to it, but she is finally using it, just not the top perch yet. I really like the color. Wish the top perch was just a little bit shorter and maybe one of the cushioned wider ones for sleeping.