I will say that the first time I tried to visit Kiku... I could not find it. It is a nicely hidden gem that you have to be confident really is there in order to find it. Anyway, I went here for a large group gathering ( greater than 12 of us in total). They were able to accommodate us at a very long table. For the most part we were left to our own devices with the server really only showing up for orders, to drop of drinks once, food delivery and check delivery. Thankfully, that's pretty much exactly what we needed and we were all able to catch up with each other mostly uninterrupted.
It is a unique little environment that I can only describe as cute. In terms of the food, I ordered a salmon roll and the salmon was deliciously moist with deliciously excellent rice. I definitely had one of those moments, where I realized how bad some other sushi rice was by taking one bite of my meal at Kiku. Overall, there are the general gluten free options afforded by most sushi/ Japanese restaurants and no contamination issues. Call ahead and they can definitely accommodate a fairly significant party.