The house was very nice. It is located in a quite and safe neighborhood. We arrived late at night, but did not any problem as a friend of Kees was there to give us the keys and explain how the things in house work. We also received a document with the house rules, and they were easy to understand.
The only problem we had is that our last day, our plan was to leave at 17:00, but when we went to have lunch, we found out that Kees and his family had arrived from their holidays, and we were supposed to leave at 12:00 (we didn't know that). At first we were really nervous about the situation, but Kees was very kind and even let us have our meal. We also had little difficulties with the cutlery, as the draw was not opening, and we had to buy plastic cutlery.
There were not major problems, the house is very big, and it is very near to the bus stop that takes to the center of Amsterdam. Supermarkets are very near and I recommend it to anyone who wants to visit Amsterdam!