We stayed there for 4 nights, the apartament was very clean and spacious. Everything worked out fine, we got in using a code that was sent to my email before our arrival and we had extra keys inside. The location is very good, there is no problem with finding S-Bahn, buses or trams that are well connected with the rest of Berlin. The hosts were always reachable and answered quickly when we had any questions. Right next to the apartament there is a big grocery store