Marvelous Hotel - great location, definitely worth a stay!
This is a high-end hotel in a great location in Boston, especially if you are visiting the Convention Center (about a 15-20 min walk). It is a 5 minute walk from the South Station train station which is VERY convenient if you plan to take Amtrak. Otherwise if you drive you will pay $40/day for parking at the hotel. I didn't use my car once to get around Boston since walking and trains make it a convenient city to visit. 
My business rate was comparable but the extra taxes do add up. I was charged a 'convention tax' and I am not sure if other hotels in Boston do the same or was it based on the location of the hotel. My standard King room was so relaxing, clean, and spacious. The bed was comfy, cable TV was great, and I loved the Keug coffee/tea maker which is convenient to have a cup whenever.
Breakfast at the hotel was very good - would recommend the lobster omelet. The patio / bar in the back of the hotel is a cool place to 'hang' for a relaxing drink or just to admire the view. 
Customer service was top notch and Concierge was excellent throughout my stay and offered great recommendations.
The location was central to the many nice restaurants, especially along the water and across the pedestrian bridge to the Seaport. (See my resto picks at the bottom.) There are a few pubs in the area which felt safe to go for a walk at night along Atlantic Ave. 
Starbucks is not far (I saw about 3 of them walking distance) and that helped with the free WI-FI which the hotel will charge you $15 a day or $40 for a week.
Restaurants worth a visit - all walking distance:
The Barking Crab (about a 10 min walk -go over the pedestrian bridge, to Northern Ave, into the Seaport). Very casual atmosphere, great lobster dishes and large margaritas! You can sit at the bar and enjoy the crowd.
Daily Catch - relaxing tables along the water and great selection of seafood. My scallops were delish and price was reasonable.
TRADE - 2 minute walk from the hotel on the corner of Atlantic Ave. Mixed crowd and a 'pizza bar' you can sit at especially if you are eating solo. Great personal pizza selections and interesting variety of cuisine.
Boston Kebab - about a 10 min walk towards Fanieul Hall on Kilby St. Great selection of mediterranean cuisine...loved the lamb and hummus. Open for lunch.
I had enough time during my business stay to visit Fanieul Hall, Boston Commons, and JFK Memorial Library (a short train ride from South Station) which I highly recommend!