A clean and ultramodern building, the Moevenpick Hotel was a great place to stay in Amsterdam. The rooms are smaller than your average hotel of the same price, but very nicely furnished, with comfortable beds and a great view of the city. A downside was the frosted glass door on the bathroom, which did not shut tight and offered limited privacy. The breakfast, a buffet, was also a bit pricey at 23 Euros. But it was esthetically pleasing, the staff were all very friendly, and the concierge was extremely helpful in booking restaurant reservations, ordering taxis or giving directions. The hotel is also a short walk from Central Station and the Red Light District. I think it's normally pricey, but we got a good deal on Travelocity.
In the parking garage under the hotel is a bicycle shop called Amsterbike. You can rent a "granny bike" - a comfortable and modern two-wheeler - from the friendly shop owner and cycle all over the city, which is the best way to enjoy Amsterdam. The shop also offers city and country tours, but I was there out of season and missed them (though they do offer pre-booked group tours). No matter - you can grab a map of things to see from the shop owner and enjoy them at your leisure. Or, pick and choose what you want to see, and spend the rest of the day just exploring on your own. I really can't express enough that this is the best way to get around and see the sights of Amsterdam.