This apartment was perfect for 6 of us to stay in Berlin for a few days! It was warm and comfortable and spacious. Super easy to get in to the apartment and responsive friendly host! F-hain is super fun young neighborhood with lots of restaurants, bars, and thrift shops - great to walk around. Note that you will have to take the train or Uber if you want to go to the more central attractions.
This apartment is also very secure. No more than 8 people can be in the apt at any time and all guests must be registered. This is a good policy and the building felt super safe, this is just something important to note before booking!