I booked the De Jonker because our two favorite hotels in Amsterdam were full. The location is great, close to but not in the center, near the zoo, botanical garden, and Oosterpark. Good dining nearby.
The hotel has no lobby, only a small reception desk. The theme is dark gray and black, and there is no color at all. Sort of gloomy. That said, the room was updated nicely, had a kitchenette, the shower room was excellent, the bed comfortable. The staff was not always visible, but were helpful when needed.