Interesting stay (not in a good way)
We stayed 2 nights in September 2012.
One full bank of elevators were being worked on and one morning we waited for approx 15 mins to catch an elevator and then finally...with many other disgruntled guests...walked down 21 flights of stairs! 
BEWARE......my husband`s Droid was stolen by a valet employee. There are signs that say NOT RESPONSIBLE FOR LOST ARTICLES in lobby but I never expected a theft in a higher end Hotel. Be warned to not leave anything in car!
The room was very clean and the view breathtaking.
Just very disappointed with service. We would most certainly stay someplace else next time in Boston. Too many other nice Hotels not to move on.