Wow what a place!
The house is located 5 minutes walk and 3 on the ferry (24h, no charge) from Amsterdam centraal station but it will take you to a whole different Amsterdam experience. It is so quit on that side of the canal, the house is just on the water, and together it will allow you to have a perfectly relaxed and comfortable vacation. The house is very spacious and very well designed to use the limited space, and would fit perfectly for couples both in atmosphere and size. I highly recommend this place for a stay in Amsterdam, and would love to stay in it again myself.
As for the owner, Karina lives just next door and will gladly help with anything. She is a wonderful and most welcoming woman and we extremely enjoyed our staying in her place!