Erik's apartment couldn't be more centrally located in the city. You're walking distance from Centraal Station and every neighborhood in the city center. Due to the central location, its just as easy to rent bikes and explore the further reaches of the city but still find yourself home in zippy quick manner.
The hosts were friendly and courteous, and I would stay with them again in a heartbeat.
Do take note, it IS quite noisy outside at night; we played white noise to help sleep at night. But that's the price you pay for staying in the most popular neighborhood in the city. Again, wouldn't hesitate to stay again :)