No one was injured. Residents of seven apartments in the house were evacuated in connection with the fire.
It's only the pizzeria that's damaged, says Tobias Åkesson, commanding officer at the rescue service.
The fire is believed to be arson and is being investigated as aggravated arson.
The alarm came in at 04 in the night to Friday, by 06 o'clock the rescue service was finishing up the operation.
The apartments in the house are so smoke-damaged that sanitation is required before residents can return to their homes.