Heiko was a perfect host. We arrived earlier than expected but they allowed us to let our suitcase in the apartment before it was ready for us. His wife explained us everything and Heiko gave us many addresses of bar restaurant around. the wifi did not work when we arrived but they find a way to fix it super quickly. The apartment is spacious, clean, well designed. We did a diner, the kitchen is well equipped and has all the basic ingredients. We spend a great moment there. I keep this address in mind if I go back to Berlin with friends and I definitely recommend it. Thank you Heiko and Nikola !!