The location is fantastic - right in the heart of Amsterdam. Please be aware of the stairs, they're vertical and you're up several stories, so don't overpack.
The place was very clean, the bed and pillows were incredibly comfortable. It had everything we needed. There are tons of shops and restaurants around, so exploring was super easy.
Our only complaint, and this has nothing to do with the space, was the flight patterns for the Amsterdam airport made it incredibly noisy in the apartment (along with drunk people at night). We recommend potentially getting earplugs to help you sleep. The flights were bad on Tuesday and Wednesday, but Thursday night we didn't hear anything. So they must change depending on the day.