Diana was quick on replying and we were grateful since she could accommodate us on a last minute notice. Unfortunately, she wasn't around so we couldn't meet her. Her brother and his friend, Ana welcomed us. They were both really friendly and helpful.
The wifi was down but Ana was really kind to give us her hotspot so we could get the Internet.
Sadly, there was no microwave so we couldn't heat up any food. We got lost using the metro despite her directions because she didn't include the method from Berlin HBF despite me asking her for it. It's alright though since we then asked the Ticket Office. We also got lost trying to search for her flat but the people in the neighborhood were friendly and showed us the right street.