We booked a Waterbus package direct with SS Rotterdam. We had a superior room for 2 nights with breakfast, a days Rotterdam card which included a days transport ticket, and a waterbus ticket with a cycle hire. All for 230 Euros. About the same price as a room. There were a few minor issue's- check in was incredibly slow due to not enough staff on duty (but they were very helpful!) and the only outside seating was around the Lido bar. Beware if you try to eat your packet of crisps or drink from your own can of drink. Forbidden!!!! So we bought a bottle of wine and some snacks and sat on the grass away from the ship. Very pleasant and a lot quieter. We enjoyed our stay but wouldn't bother again as its just a bit far from anywhere, although there are a couple of reasonable restaurants a 25 minute walk away by Rijnhaven metro station.