It's a great neighborhood convenient/grocery store and more. It's not a huge place, but it's…read morepacked with your basic daily needs and more... It's located in the hotel/business district near Frankfurt International Airport, and it makes it very convenient to pickup anything you want if you don't want to spend a lot of money eating out.
They even have a sushi kiosk offering freshly made sushi packaged to go. I think selections are very decent here. I've been noticing these sushi kiosks are popping up everywhere in supermarkets. It must be a new corporate initiative to respond to the demands of consumers.
It's a little set back from the main street, so you may have to look for this location.