I bought this for our bunny when we moved her indoors. She is rather large and we tried to put the litter box inside of the hutch, but she had a hard time fitting in the litter box when it was inside the hutch and quit using her litter box. Once I took it out, she went back to using her litter box. We constantly find her hanging out in both stories of the hutch. I love how easy it is to clean.  She of course has chewed on the wood, but it will hold up for a long time. It is “cheap” wood but it works for our bunny. It was easy to assemble - I did it by myself. I love that it’s on rollers too so we can move it and clean under it.