Mark's place was as good as expected: very cosy and clean. Is very well situated, in a calm neighborhood. There are trams and buses taking you right to the city center, but the best thing is to rent a bike, and in 10 minutes you can reach the city easily. Mark was very helpfull, he gave us tips of restaurants and places and things to do, and he was always available to answer our questions. I would definitly recomend Mark's place for a two people stay in Amsterdam.