Frank's apartment is one of those rare places that looks even better in reality than it does in the on-line photographs. The fact that it's his actual home makes it better still, as you get to take advantage of all the conveniences and extras with which he's equipped it. We had a very comfortable stay, and we were there for a full month. As a landlord, Frank is first-rate: we've had great good luck with the people we've rented from on AirBnB but, even among so many good ones, he's definitely one of the best. He was consistently prompt and clear in responding to our pre-arrival questions, and he was infinitely flexible about our arrival itself (the airline changed our flights a couple of times and we were then delayed at the Berlin Airport, but Frank adjusted so as to greet us when we finally made it there). All in all, there are just two reasons that I give this apartment four rather than five stars, and neither of them reflects negatively on Frank himself. The first is that his neighbor is a jerk: if I said that he's unreasonable about noise, that would simply seem like my subjective impression, so let me just state a fact: our first encounter with him happened when he stepped out of his apartment at 3 pm to complain that we were closing the door too loudly--and that, alas, was not our last or worst encounter. The other has to do with the location--and this one actually is a subjective matter. If you're looking for a safe, clean, quiet neighborhood, you could hardly do better in Berlin than to stay here. But if you're looking to be close to major sights, this might not be your best choice: Berlin is a big city and, even with its good transportation system, it simply takes a long time to get from here to most of the places you'll probably want to be going.