Supermarket
REMA 1000 Sofienberg
20 locals recommend,
Location
47 Trondheimsveien
Grünerløkka, Oslo
Tips from locals
Closest supermarket. Low prices (for Norway, anyway) and decent selection of groceries. (For Norway, anyway)
The closest food store where you can get all you need. Buy your dinners here ;)
A cheaper, bigger supermarket. If you can be bothered to walk 200 meters extra, this might be better for your budget than Bunnspris.