My friend and I had a smooth stay overall. The bedroom we were given was spacious (full sized beds for each of us was awesome) and the instructions to check out (along with housekeeping rules) were straightforward. Siena is nice and greeted us when we checked in.
The bathroom is really small and cramped which made our stay a bit uncomfortable. We would have had to share a bathroom with another set of guests in the room across, but fortunately, I don’t think there were any other guests while we were there (or we were fortunate enough to not run into them). Since my friend and I weren’t at our Airbnb too often other than to wash up and sleep, we didn’t run into problems like waiting to use the bathroom or something.
Overall, I’d recommend this place if you just want a place to sleep - if you want a place to cook or have friends over, I’d suggest somewhere else. It is expensive for what we get, but the Airbnb pricing in Boston is just not great in general.