Niels met us outside the apartment when we arrived and was very nice to us. He showed us around the place and helped us with anything we needed, like pointing out places on the map.
The studio was just as described, nice and clean and is on a fairly quiet road, but not too far from anything. It's comfortable enough to stay in (like when it rains, which it did for us) and cook a dinner and watch tv.
Would definitely come back to this place, made for a lovely first time visit to Amsterdam, thank you!