Mona and Ahmad are so kind, nice and warm-hearted. Ahmad picked us up at the U-Bahn station even though it was really late in the evening (our flight was delayed) and Mona welcomed us with mineral water and fruit. We were given coffee/tea/hot chocolate in the morning and little cakes that Mona had made herself. Delicious! We also got some useful tips for travelling around Berlin. Would definitely stay again.