We've had a beautiful time staying at Jet and Frank's Apartment.
They we were very friendly and helpful.
Jet welcomed us with a drink and a city map and gave us good advices for a nice city trip (including activities, restaurants etc.)
The room was very clean and cosy. The bathroom was very modern and clean as well. The W-lan and netflix worked perfectly.

We've had a beautiful time staying at this great located place.

PS: Jet has probably the most comfortable bed in whole Rotterdam :)