We have three cats and they All Really Like this cat bed. I bought two of them and it's common to see one inside and one on the top. Our younger one enjoys playing with the attached toy balls--I didn't bother hanging the extra one. All three cats fit nicely inside or on top of it. We have an older cat that's about 18 lbs and she fits inside just fine--as do our younger cats. I put a little catnip in and on the beds to peek their interest. Also, it took a couple days for smells to out-gas before the cats wanted to sleep inside for long periods of time. 
Fantastic Buy!!!