Kaka used to be one of my favourite sushi places, but there quality has noticeably decreased as it's gained popularity.
Their sashimi are still pretty fresh and good. And I've always loved their aburi sushi. They have a wide variety, and it's pretty well executed. The brûléed tops help the sashimi on top melt in your mouth. Unfortunately, our sushi was room temperature... as if it was prepared and was sitting on the counter for a while before brought to our table. The rest of the menu is ok. Pretty standard AYCE stuff.
The environment is pretty, making it a nice spot for a meal. Seats are limited though, and with the restaurant's popularity, try to book a table in advanced. Walk-ins would have long wait times