The positives: This hotel is right in the middle of it all, close to everything. It might be one of the best locations you could ask for in Amsterdam. Some of the rooms here are incredibly huge with canal views. Theres a metro stop right in front.
The negatives: The hotel is badly in need of a makeover or renovation. It's oldschool. Some of the rooms are not even accessable by elevator and you need to carry a bag up steps. In many of the rooms you can hear the metro bell pretty loud starting at 6am to 12am.
If you are looking for a good deal in a good location, this place is fine. But not if you want a 4 or 5 star that feels modern and polished.