Boston offers so many great options for guests - It's a beautiful city that offers wonderful music, sports, arts and dining. Fenway Park is always a great start because of it's historic significance. It's beautiful to walk along the Charles River where you can find both biking and walking/running paths. I would suggest visiting the newly developed Seaport District which includes the Harpoon Brewery, ICA (Institute of Contemporary Art) and many dining options. From there I would walk down the Greenway (It's feels like a retreat from the city) which often features an outdoor market during spring and summer weekends as well as different food trucks. The Greenway brings you right to Faneuil Hall full of street vendors and entertainers, and also to Boston's Italian Neighborhood, the North End. Make sure you stop at one of the many pastry shops in the North End (Modern Pastry, Mike's Pastry, etc)! I would suggest dinner in the South End - too many restaurants to count!