we have 3 indoor outdoor cats and that is why we bought it. at first, they wouldn't even get on it. i was so disappointed in them rejecting my gift.but after a few days of getting used to it, and a bit of catnip sprinkled on it, they got the hint that it was for them.the cat scratching posts are so nice. it is sturdy and not hard to put together. we put it in front of our big front room window so they can look out.the only thing i don't like as much is the color. a medium tone would maybe not look so used so fast! but it does make it easy to clean. hineiko loves the top shelf, pikachu is into the "room" and he gets to use it when momo does not hog it. momo is a big cat and it is very sturdy even with all three of them on it. pikachu loves the scratching posts and it has stopped them from attacking our furniture. it is good height for our house and compact but lots of space to lie and groom and sleep.
also, the price was comparably right and free s/h is a plus!