Gema is a perfect host and her house its beatiful! Clase to Lechmere metro Station in a beatiful neighbohood.
Here are some recomendations of Cambridge (Thanks Gema!):
Yes you do! You leave on Sunday. I got my dates confused.
Here is a list of things for you...
For a good walk or a run:
You will have to go to the Charles river. From the house, take Otis Street towards the water. Walk 2 blocks, go through a small park, and walk one more block. Cross the street and you will see the water. Keep the water on your left and you will have the city skyline on the other side of the river. Cross the river on the first bridge (Longfellow or the "salt and pepper" bridge), take a right, walk on Charles Street (good places where to eat, antiques, bakeries, coffee shops, etc.) to the Commons Park (our city park), and then go down Newbury Street where everybody gets an apartment the first year they move to Boston.
For movies:
Kendall Cinema you will be able the watch all the new movies you have been reading about.
For art:
The MFA and the Isabella Gardner Museum also de Contemporary Museum by the water.
For good food:
The Short North, but the food is excellent everywhere. Italian pastries are a must there. Eat fish everywhere.
Go to Faneuil Hall for the Boston experience and the people and the food.
Go listen to the Symphony in Symphony Hall on the green line. It is always a great party.
The Fenway Tour is a classic.
The Duck Tour on the Charles River is fun.
Harvard has the Fogg museum that is worth your time. They also have a tour of campus.
MIT campus is quite stunning with all the modern architecture including a building by Frank Gehry, the green building by IM Pie and the "big sail" by Calder in front of it. It has the MIT Museum that is quite interesting.
Tatté (9 minute walk) is a must. On a weekday go to the Sweet Touch for breakfast. It's family run and very generous and good. They close at 3pm.
A block away from the house, at the corner there is a sushi place with great food. I love the soups, the salads and the sushi.
Right next to the sushi place there is a tiny coffee shop that makes the best waffles I have had since I had real Belgian waffles in Brussels in 1973.
For just good pizza, good steak salad, subs, etc. walk to Cambridge street on 5th and turn right. Mid block you will find Aram's #2. They close late.
One night you might want to go to the neighborhood bar down the street, East Side Bar and Grill. Very eclectic: you will see the Catholic priest eating with the gay couples, the children and the very senior citizens, students, business owners of the area, muslims and jews having a drink at the bar and the food is really good. My favorite is spaghetti with sea food on top and their pizza is famous.
Right across the street and next to the railroad tracks is The Loyal Nine, a great place where to have a drink and taste new flavors. It has the same type of crowd just younger. I haven't figure out what my favorite is there because the menu has many tasty dishes. They both open at 5pm.
Cambridge Street walking toward Harvard is filled with good food and lots of places to eat outside weather permitting.
You will love the area.