We stayed at Julia's place for 5 days, and we had a great time!
The metro is at walking distance 7-10 mins and from there you can get anywhere in berlin. Also there are bus stops nearby.
Many pretty bars and cafes in the area. Also food you can find around.
At late nights, when the metro is off, you can get back to julia's place by night buses and some walking.
Julia was really communicative, her room was clean and spacious. It was what we were looking for ,we would definitely reccommend!