I enjoyed my time at the Westfields Marriott...the staff were excellent, attentive, and very helpful. The food in the restaurant was very good, and the overall facilities were superb. Where things didn't go so well was in the actual room where I stayed. The bed was not comfortable and the fitted sheet did not fit the mattress, so I had to fight all night just to keep the sheets on the bed. Furniture was a bit old and and the bathroom, though clean, also showed signs of age and wear. I had expected more based on the top rating that this hotel had earned from AAA.
The room service menu was extremely limited and restaurant staff were not able to prepare anything that was not directly on the menu.
Would I stay here again? Probably, but my expectations would not be for a hotel that earned a 4-diamond rating from AAA.
In terms of overall comfort in the Chantilly/Herndon Area, the World Center Marriott is a much better choice.