Beautiful apartment in the middle of Amsterdam city center, everything is reachable by walking! The view from the apartment is just flawless! The apartment is very clean and silent too. Would definitely stay there again!!!
The check in is late (3pm) and this may be uncomfortable if you arrive very early in Amsterdam and you want yo have a look around without luggage - luckily the luggage locker suggested by Sun at the central station is very comfortable.
As others wrote before: stairs are very high and narrow, that's ok if you have small baggage, but I think it could be very difficult to reach the apartment with big ones.