My 4 days in Boston were perfect, and the 4 nights at Li's b&b were a big part of that. I took the red eye and she let me drop my suitcase off at 9AM so I could go out and immediately start my day. Breakfast was really good and the location was fabulous--subway around the corner, Charles River Esplanade about 3 blocks away, and I could walk to almost everywhere I wanted to go. My room had its own bathroom down the hall and after one night this presented absolutely no problem.
The house is from the 1890s or 1880s and beautiful; it's almost totally soundproof--it's so quiet that until I saw other guests at breakfast, I thought the other rooms were empty, when in fact the opposite was true.
I'm directionally challenged. Every morning I told Li where I wanted to go--her directions were impeccable and I never got lost!
Also, Li is warm and personable; I will stay there again the next time I'm in Boston and have already recommended to friends :)