Oliver was very quick to reply and extremely accommodating. His apartment is conveniently located near train/tram/bus stops and nearly everything in the city can be reached in under 40 minutes. The apartment itself is in the heart of a very lively neighborhood that we spent a lot of our mornings and evenings exploring. All in all my girlfriend and I had a great experience in Berlin with this in our home base and are looking forward to visiting again in the future.