This is hands down, the best sushi joint in Las Vegas. It is located right in the heart of China town and offers all you can eat sushi for about $25. The price is great and so is the sushi. They have tons of rolls to choose from and you never run out of options. The Brooklyn roll is my favorite and if you like eel then it is a must try. Even when it is busy the waitstaff is attentive and always keeps the food coming. They offer a frequent buyer card too, so if you go to Kaya 8 times, then you get a free meal.
(If you plan on going Friday or Saturday night be prepared to wait since it gets super busy)