Keisha answered our questions very quickly via email. Alan was really helpful on our first day with information about what to see and made excellent restaurant recommendations. The apartment is perfect for 2 people, good bathroom and well equipped kitchen with 2 groceries a block away. It's also a block from the M4 line and S-bahn. If you want an apartment in a quiet area this is for you. There are bars within a 10 minute walk but it is not in one of the very vibrant Berlin neighborhoods though gentrification surely seems on the way. I would definitely stay here again.