That is a nice deal, isn't it? It's also for a standard queen or king room, which is not the petite rooms that are cramped, so you'll have some extra space. If you were to book it on their website, it would be over $300 per night.
As a previous poster mentioned, you can get great deals on other sites, too. This rate I found is from LastMinuteTravel.com - simply enter your dates of travel, 1 adult, 0 children, and when the search results come up, you'll see all sorts of hotel deals. You're going to want to look for a "3.5-star hotel in Back Bay Area/Boston" that is listed as being a "Best Value!" It shows a TripAdvisor rating of 3.5, and it says based on 2165 reviews...crosscheck that with TA and you'll see its a perfect match! It also says 5.2 miles to the airport, if that helps.
It shows a standard room as being available and it says "special deal - get 10% off with your 3 night stay" - that drops the rate from $199 per night to $179 per night.
Enjoy your stay at the BPPH, and if you have any additional questions, please let me know!
Edited: 10:00 am, February 18, 2013