It's a great place to stay while in Rotterdam. the apartment is clean and big enough for at least 2 persons.
Niels is a great host he welcomed us and showed us some nice places to eat/see.
the bus station is really close by a 2 minute walk. Rotterdam is easy enough to get around with the metro/bus and or train. The dock is really close by which makes for a nice evening walk.
I highly recommend staying here.