We stayed 2 nights in Berlin. We had to call Heike when we arrived since we were travelling on motorcycle and could not know our exact arrival time. Heike met us within 15 minutes and showed us around the apartment and told us some places to go to eat. The motorcycles were safely kept in the locked parking area. We had an enjoyable stay. It was any easy commute into the city on the train which is a comfortable walking distance from the apartment. The area feels very safe and there are restaurants and a grocery store all in walking distance. One thing to note is that the apartment is on the 3rd or 4th floor and there is no elevator.