My parents and I liked very much this 1st apartment: its central location, its the historic building and the interior design, which is modern and uses space efficiently. Our hosts, Joshua and Michael, was friendly, email/text communication with him was very timely and pleasant.
There were other guests in the building but everything was quiet only their walking on the floor above was noticeable from time to time.
The apartment was also nicely clean.

To sum up, I would definitely recommend this apartment and seek to reserve it next time I am in Amstrerdam.