Jennifer and I had a great stay at Nienke & Gert's place. They have a very lovely home, which was very clean, and we felt very comfortable and safe when we were there. Every morning we were greeted with a delicious breakfast that was even catered to Jennifer's dietary needs. Their house is a short walk to the ferry (which is free) so it's accessible to Centraal Station if you are taking the train in. Nienke and Gert are very lovely people with a very lovely family and we would definitely stay with them again.