I've been to Kit Kat a few times in the past year, and have enjoyed it each time. The food is delicious, and the service friendly. Some of the standouts include the lemon chicken, pasta with spicy italian sausage, and mussels in a sauce so delicious it had dining companions fighting over the bread to soak it up!
The only complaint I have is that the tables near the bar get a bit tight when there are a lot of people waiting for a table. Also, the tiny entrance door is fiercely guarded in the winter to keep those sitting by the door protected from the cold...it is much appreciated, but it's a bit uncomfortable to have to practically push out and close the outside door on people you don't know in order to be permitted inside.