I doubt you can find a prettier nor better located 2 bedroom place to stay in Boston!
It has its quirks (only bathroom in master, old electric wiring with few outlets requiring AC off when using hairdryer, and narrow interior stairs) but these are also part of its historical charm. It is spotless, newly furnished, and a great space all around. My friend and I were very comfortable there. No question I'd stay again.
Be aware that in mid-Aug 2019 there is massive street construction happening just outside, beginning at 7:30am weekdays.