My husband and I stayed here for a few nights during our honeymoon!
Pros: (1) Amsterdam is small, so this hotel was walking distance to just about every tourist attraction. We made the walk to/from The Red Light District, Ann Frank House, and Heineken Factory. We even managed to squeeze in a river tour that wasn't too far of a walk from our hotel. (2) Night life in this area was great. There are a few restaurants and bars just on the other side of the river that was home to a late twenties/early thirties crowd - which was right up our alley. (3) Being 'on the river', the view from our hotel room was excellent! (4) Our room itself was very large and comfortable for the most part. (5) The front desk staff was helpful, and all personnel spoke English.
Cons: (1) The rooms are very dated (box TV's and all!), but if you don't plan on being indoors very much, this should not be an issue for you. (2) The breakfast buffet is not included in your room fee, and is very expensive.
Would I stay here again? Yes.
Would I recommend this place to a friend? Yes.