I decided to go to Amsterdam for Easter, with my partner and two friends. We had a wonderful time. The flat was lovely, very clean, lots of space, and beautifully decorated. The beds were very comfy. It's very close to Vondelpark by foot. The tram in front of the flat takes you to Central station in 25 minutes. And it's also super close to the airport (bus just right outside the flat, 30 minutes max!). We were welcomed with a nice bottle of red wine and very useful documentation about Amsterdam (things to do, places to eat, etc...)
Thanks a lot Otto!