This Hilton seems weirdly out of place in the vaguely post-apocalyptic landscape of ex-shipbuilding yard NDSM, but it's close to some great bars and restaurants, in easy (ferry) reach of the city centre, and much cheaper than Hiltons on the other side of the river. Rooms are small, but offer the usual comforts, and some have excellent views over the water.
Doubletree Hilton
Amsterdam Noord