To find the nearest grocery store in the city, follow the local's directions: Head down the street, and at the upcoming large intersection, turn left at the pillar (Litfaßsäule). After that, you should see an old church on your right. Cross over the market square, and you'll find the supermarket right behind it. As for what is next to the grocery store, the description mentions that it's located directly behind an old church after crossing the market square, but it doesn't specify any other stores or landmarks immediately adjacent to the supermarket. To know exactly what's next to it, you'll have to visit the location yourself. The context suggests it might be near historical buildings or perhaps other shops on the market square.