We've been coming here for years. They have the best Greek salads in town and if you don't want it dressed, they won't dress it. They are extremely accommodating when it comes to food restrictions. In the summer there is outdoor seating, with umbrellas to provide shade. Their white veggie omelettes are the best in town and I know, because no other omelette comes close to the ones at Kos.
This Kos is superior to the one in Kensington - the food is way better!