My family and I (couple + 8 yr old child) rented Mark's apartment for 5 days around mid August 2013. Mark has been very helpful and friendly before and after the reservation, we skyped, sent each other messages via airbnb, he answered all my questions within a short time, which I found really convenient. The apartment is very pretty, there's a fully equipped kitchen and a nice tv set. The apt is located 2 mins walk from Mercatorplein. You can take tram 7 or 13 to go the Dam/Central Station or Leidesplein/Museumplein, it takes about 10-15 minutes. Plus: In Mercatorplein there's a nice supermarket which is always open so you can do yr grocery shopping there and just behind the apartment there's an amazing park, the Rembrandt Park.
The area is very quiet at night and if you have a baby or a younger child, they will sleep real fine. Mark was on holiday himself when we arrived but he arranged everything through a friend of his who waited for us at the apt so everything went fine and smooth. He also left us a bottle of wine to share:)