Marijn's apartment is a big (4 floors) and fully furnished house, with a nice terrace on the roof, all kind of equipments, including a lot of toys for children...
It's definitely a great choice for a family with kids (maybe not too young because of the stairs).
It's located in a quiet area (with a nice playground behind the house) but still close to public transportation to get to the center. Free Parking available on the street
Marijn was not in Rotterdam for the check in but he had planned everything in advance (thanks to his neighborhood) and was always available for questions.
He also left a small (and good...) present at our arrival...
Great choice, highly recommended!!!