The booking went very smoothly as Kim replied to everything immediately. The house is really easy to find as it's literally 30 seconds from the metro that goes straight into town. We received a very warm welcome, got all the information we needed and based on our interests, Kim gave us some tips about what we might want to visit. Everything was very clean and taken well care of. We did not use the kitchen but it looked great as well. The room was very big with comfortable beds and a TV. Checking out was great as well as we could leave our luggage so we could enjoy an extra day in Rotterdam without dragging suitcases.
In short: I would highly recommend this place.