Both this building and the neighborhood of Cambridge was so charming and wonderful. My wife and I spent our anniversary here and loved it. We had intended to spend most of it in Boston (which was outrageously convenient to get to; the airbnb was maybe a 10 minute walk to the subway which had trains every five or ten minutes to the city and it was then maaaybe a 10 minute train ride), but to our pleasant surprise, we ended up spending most of our vacation in Cambridge. It was an easy and convenient stroll to a lot of options for food, drink, and activities.
The airbnb itself was wonderful. It was perfectly big enough for the two of us, it was clean, and the bed was quite comfortable. Paul greeted us personally when we arrived and was incredibly knowledgeable of the history and geography of both Cambridge and Boston, and gave us a breezy run down of places we could visit (some of which we were able to; none disappointed!) Paul gave us his number and was very responsive and communicative while we were there, but the place was set up so well that didn't end up needing him as we encountered no issues.
It is an old building, which for us added to the charm, but while the clawfoot tub was a unique and fun experience and the flight of stairs did not bother us at all, some people that are mobility-challenged could find those to be difficult. However, that is not a knock against Paul or the place in the slightest, just something for folks to keep in mind.
We felt very safe the entire time we were there, and there was never a noise issue from the neighborhood. The view out the back deck was nice, especially if you enjoy brick buildings, which we love. We can't find anything to complain about in either the property, the location, or the hosts, and my wife and I are absolutely going to come back here the next time we find ourselves near Boston!