I am really pleased with this cat "tree".  It's the right size for my 15lb cat and he has room to spread out.  It sits at the height of the window sill so he can watch out the window.  He does use the bottom base as a scratching post (not the actual scratching post) and it's kind of a felt material, so I'm not sure how long it's going to last, but that would be my only concern.  It was easy to assemble and I like the way the bed attaches with elastic so it can be secure but easily removed for washing.