Much Better than the Intercontinental
I stayed at both the Ritz-Carlton and Intercontinental during a trip to Boston because neither hotel had government rate rooms for my entire stay. I liked the Ritz-Carlton much more than the Intercontinental. First, the Ritz-Carlton charged me only the government rate, no taxes. The Intercontinental charged an additional $29/night in taxes. Second, the Ritz-Carlton is in a great neighborhood minutes from the Theatre district, Chinatown and the Boston Commons. The Intercontinental is in a nondescript neighborhood with few restaurants close by.
I had a lovely view of the Boston Commons and the room was very quiet. Ritz-Carlton beds and linens have always been my favorite for being plush yet firm -- this bed was no exception. The shower was much better than the Intercontinental, with strong water pressure and a much higher quality shower head. The gym facilities were very good. I like the special touch of having apples in the lobby. The staff were very helpful and attentive without being overbearing. 
My only two complaints are the hotel restaurant (Artisan Bistro) which was overpriced with very bad service and the lack of a coffee maker or hot water kettle in the room. Luckily, Starbucks is a block away.