Martin was a great host! His enthusiasm for the city was contagious and he took the time to show us some of his favourite spots. The apartment was a basic home, but very clean and a block from the Underground, so easy access to both airports, train stations, and the rest of Berlin. Mall of Berlin, Checkpoint Charlie, the Holocaust Memorial, and the Brandenburg Gate are walkable from the apartment. Martin went the extra mile and even printed and delivered our boarding passes when we were finished in Berlin. Danke!