We were personally welcomed by Kamil at the bus stop, he walked with us to the house and made us feel at home!
He and his wife are kind and helpful people, we recommend you to try their hospitality!
Last advice: we slept on the bed at the top floor but it was a little bit difficult to climb the stairs, we'd suggest you to sleep on the sofa-bed in the living room, instead!
All in all, if you travel to Rotterdam, go stay at Kamil's, you won't be disappointed!