I had the best stay at Klaas' place for 3,5 weeks in total. The room was private, but when I needed help I received immediate answer from him. I also had the pleasure to meet his son and daughter who are very very kind and were welcoming me warmly. The flat including the bathroom was always very clean. Towels and toileteries were given so I did not have to worry about that. Klaas was even so kind as to put a few beverages in my fridge including water and orange juice. The neighborhood is very calm, yet close to the city centre (20 mins by tram). There is a supermarket right across the street. It was very easy to check in and out with my key and he even showed me a map with everything I can do in Amsterdam when I checked in. The balcony of the room is pretty large and is nicely decorated with a few lights for the night. 10/10 recommend and I would definitely come back!