My hamster, Harry, loves this lovely little house, he stores his food in the top section and sleeps in the bottom! He loves chewing it aswell which I'm really pleased with as he hasn't chewed anything else I have bought him in the past... The only thing I would say is that the lid on the top could do with being removable, as it's quite difficult to clean the top section if he's put lots of bedding up there as it means sticking my fingers in to pull it out... But as he only keeps food up there it's okay, if he used it as a loo it would be a different story haha!
It looks really nice in his house too, so I'm very pleased with it :)