Overall, very strong grocery store in the city. The aisles are packed, but still feels like enough space.
Produce section can get pricey, but many items that might be $$$ specialty elsewhere are about half the price here, with a far wider selection.
The kimchi selection looks great, their prepared food section is strong as always, not to mention a wealth of meal prep kits.
The meat is hideously expensive but clearly high quality. The alcohol is similarly hideously expensive, but again looks like a great selection. With a bottle of run-of-the-mill soju or makgeolli costing $7, $8, or even $10, this is their weakest point in the store. The large plastic bottles of soju are ~$30, which is understandable but clearly overpriced.
The food court is a bit limited but nonetheless still great for a city location. Ramen hit the spot, and a birthday cake from the Bakery was excellent and light.
Overall I would say this is a solid 8.7/10, certainly worthy of 5 stars though. Obviously a bit pricey as it's in a city of high-income intellectuals, but it has a great spread.