Some 30 minutes from the airport by taxi, this hotel is large, comfortable, pleasant...yet cut off. At €100 per night excluding breakfast, the price is reasonable, whilst we managed to get a rate of €12 for breakfast, which is bountiful to say the least - from freshly made pancakes to a myriad of other local dishes.
The underground walk to the Convention Centre is excellent and fast - some 5 minutes walk - great if attending or participating in any fair.
The only drawback is remoteness of location - based in the Olympic village, very close to the Bird's Nest construction, means very poor service from taxis. Waiting over 40 mins to get a taxi is pretty normal and there are times when you actually give up and are forced to eat at the hotel. (Must add that weather during my stay was pretty lousy with sleet and snow making road travel pretty daunting, hence causing further delays).
If this is not a major issue to you, then this is an excellent place to spend your time in Beijing.

The hotel is very confortable, clean and quite. Amenities really good. Staff very helpful. Breakfast was very nice for foreigns. The restaurant buffet for dinner or lunch was overpriced for Beijing patterns (570 yuans for a couple) and the food was not so good. There is a shopping mall two blocks away with many other good options for food and a good supermarket too. The subway station is in the shopping mall too. The hotel is near the Olympic Park, but far away from other landmarks. I took 45 minutes to achieve Sanlitum Village by subway. Besides this, the hotel is fine and everything was ok during my stay.

Just arrived yesterday. The room is big and nice, but awfully warm under the sun. The aircondition in the room only give warm air, so useless. My room temperature stayed 27 C° whole night, evening with the window open. Called the reception, no help..... Couldn't really sleep. In addition, The street is noisy when you have to keep the window open.