Mark was the perfect host. After we had booked and before arriving in Amsterdam Mark was quick to respond to any questions I asked of him. Before we arrived he sent me instructions from arrival at the airport to his place - they did not fail. When we got there after almost 1&1/2days of travel we were welcomed at the apartment by Mark with fresh flowers, food items and a quick orientation of the apartment before Mark left us to it. The apartment itself was just gorgeous. It was in the most fantastic spot next to the Waterlooplein station. It was only a short walk to the Dam square, Anne Frank House, Van Gough Museum and Rijksmuseum. Great food and the most picturesque neighbourhood. We were there for NYE and we could see the fireworks all over the city from the lounge room and the rooftop terrace. The only thing to mention is that the apartment has two sets of very steep stairs - this may impact your decision to stay if you are not very agile or if you have small children.
I would recommend everyone who visits Amsterdam to stay at Marks place!