If it was me i would be taking the first one as it is closest to the centre of the city. It all depends on how you plan to come to Amsterdam. IF you come by train i really recommend you take the first as it is the least trouble moneywise (closest to the trainstation so taxi costs less) and walkwise.
The other two seem fine as well and also depends on what you want to do in Amsterdam. Still to me the first one seems to have the best location for whatever you want to do.
If you could elt us know what time you want to go to Amsterdam i and perhaps other dutchies can look if we have the time to come and show you some stuff. I am sure there are several people that would be honoured to show some things of our capital.
Another plan is to make a list of what you want to be doing and things you really want to visit. Perhaps people can do some research how to get where easiest. If i have evening shifts i could come and show you around some if you want. Would be nice to meet up.
