We've been in Cambridge for a conference at Harvard University. The house is 15 min by walk in a quiet and cozy street. Pleasant street is quiet too and we felt like home staying here.
After the conference we spent few days visiting Boston: 10 min by walk for Central station (red line) for being in the city center soon.
Lucia is very kind and managed to give us all we need to stay comfortable.
Highly reccomended!