My overall experience with Ralph and his airbnb was Excellent! He messaged me a week before my check in and helped me figure out how to get to the place from the airport. Upon arrival he let us know about the nice spots near his location where there was food, markets, etc. He even informed us of points of interest further away. The airbnb was VERY spacious , really tidy, had a nice bathroom, and was fresh inside even when it was hot outside (35 C when we went which was rare for Berlin ).