Having not been to Amsterdam previously, I was a little worried about the 3.5Km to the center of town...but I had it all backward. It's a walking city and everything is within a 20-30 minute walk. The apartment is in a super cool neighborhood...obviously getting a lot of attention. Situated between the cool area and adjacent to the traditional areas (like Anne Frank House).
It was really amazing and the owners could not have been more accommodating. I can't say enough. It was great.