First, it must be emphasised that my review of this hotel needs to be put in perspective. Of course, the hotel falls within the luxury category; of course, you will not find dirty linen and neither will you be mistreated by the staff. However, it certainly does not deserve to be one of the "Leading Hotels of the World" - something which I have grown accustomed to regard more as a sacred text rather than a mere hotel directory.
The exterior is mostly unimpressive; indeed, the spectacular night shot splattered all over promotional materials is, at the very least, deceiving. The lobby is equally uncharacteristic - more appropriate in a good 4-star hotels than in a deluxe 5-star property. No specific complaints about the rooms: everything was there and everything functioned appropriately, but this sort of hotels should offer that indescribable additional factor which, in my opinion, was lacking here. Another thing that struck me as belonging to a lesser-standard establishment was the corridors: a mixture of conservative classicism and awful 70s door frames - very uncool.
On a more positive note, the restaurant "Excelsior" is pretty decent and more than reasonably priced.
That said, I must acknowledge that I managed to find the rooms at a discounted rate (around €250 at lhw.com) and, accordingly, these complaints do appear to have a somewhat pedantic tone. However, if you were to pay the rack rate for the rooms, which orbits around €400 for doubles, my criticism would be more than justified.
If you want to go to a true deluxe hotel in Amsterdam, I suggest you head, as pointed out by an earlier review, to the Amstel: a proper establishment, whose restaurant, "la Rive", is also superb, though considerably pricier than "the Excelsior". If you scout the web well, you may be able to find a room for around €300, which is more than fair given the standards - surprisingly high for an Inter-Continental.
Also, if you are looking for a design/boutique address, and are willing to fork out at least €400 a night, then the Dylan is the place for you: by far the most stylish hotel in town, its restaurant is also worthy of mention.