Gunilla is a wonderful host - she's very friendly, made excellent restaurant suggestions, provided clear and proactive instructions to make sure I knew how to get to there easily, and was very helpful with any questions I had.
Her place is comfortable and spacious, and she made sure the kitchen was stocked with tea, coffee, and breakfast food so I didn't have to worry about what to eat in the morning - really helpful when I had an appointment first thing the next day.
Her place is on a quiet street. There are lots of restaurants around and the train and subway are both a short walk away, making it really easy and cheap to get anywhere in Berlin very quickly.
I enjoyed my stay and would choose to stay here again.