This is one of the many stalls in the Chef's Assembly Hall food court. I would recommend coming with friends and holding down a table before exploring your options since it does get busy during meal hours.
Strangely, our whole table ended up getting different ramens from Isshin. They are efficient with filling orders and a fast 5 minute wait is rewarded with a hot steaming bowl of ramen. The noodles are perfectly cooked and the broth is creamy, hot and delicious. I had the black garlic flavor, so it came with two pieces of thin meat and a half of a golden yellow soft-boiled egg. The portion is on the small side, as I finished my bowl (drank most of the soup) but was still a little hungry afterwards. Unfortunately, I have to take a star off because my bowl had little pieces of hard black specks in it (from the black garlic?). I had to spit them out as I went along, which ruined an otherwise great meal.