I just got a hamster yesterday (Winter White by the name of Jasper) and this is the house he got. He seems to like it well enough. It comes with a 10oz. water bottle (which I have issues with), silent exercise wheel, 4 add-on accessory locations, and more.
The assembly was super easy. I didn't even consult the instruction book. The little cage is quite colorful as well as you can see from the images I've uploaded. The roof of it is so pretty, its like a highlighter yellow clear plastic. It's also got a built in handle so that you can grab your little furry friend and go.
The cage is the perfect size for dwarf hamsters, mice, and young hamsters (if it's a teddy bear hamster it will need a larger home once it starts hitting it's full size.
Plus the cage is totally compatible with all the many available CritterTrail additions. My only complaint is the water bottle, it's simply not that great. I would strongly recommend investing in a better water device for your new (or old) family addition.