Calin and Alex were extremely helpful and flexible -we were able to check in at a time convenient to us. The apartment itself is in an amazing location and is fully equipped with everything one would need to feel as though they live in Berlin. The location is great for restaurants, transport and many bars etc- a highly desirable area of Berlin to live. Having the lift access was an added bonus with luggage etc (especially because the apartment is on the 6th floor). Views from apartment were beautiful, as was the welcome gift. Would highly recommend the apartment to anyone coming to Berlin.