OMGOMGOMG -- SO happy for you
! And envious (in a good way)!
Amsterdam is absolutely incredible. The Dutch are, by far, one of the loveliest people I have ever come across. SQUEE! I just adore Amsterdam...would so love to live there someday. It is the most charming city and has so much history...the architecture is stunning.
If you like art, don't miss the Van Gogh museum - as you'll get to see several Van Goghs in person - and it's really a treat.
Also, the hotels in Amsterdam are my favorite, by a long shot. You can stay at a very reasonable hotel - and it will usually be just beautiful.
Can't wait to hear of your trip when you return!