Nice space, fantastic location, literally a minute walk from Amsterdam circle and associated cafes and restaurants.
The apartment itself is cozy, with hardwood floors throughout, comfortable living areas, and lots of light. If it's important to you the internet connection was both fast (30mbs down, 15mbs up) and stable.
The only thing to note with the apartment is the street traffic, far from highway level noise, but noticable nonethless. With the windows closed it's really not that bad, in our 8 days there it became less and less of an issue (to the point where we wanted to rent the space for another couple of weeks, but were too late in reserving).
The hosts, Lucas and Pablo, were responsive and accommodating. Overall a great deal given the location and comfortable living space.