Marijn was a great host, and met us upon arrival mid day, taking time to explain how to get around and some of the sites. The room also has several travel guides to Amsterdam in it, including some written by her friends. The area was great, the flat is located very close to central station, Dam square, and the red light district. The museum district is a short bike ride or tram ride away.
The flat itself is a loft style place(one room plus a bathroom) with a small kitchen with microwave and fridge. It is fairly quiet for being so central.