Great location within walking distance of tourist sites and the North End. I guess I didn't pay attention to the fact it was on the 3rd floor of a walk up. Luckily were had light luggage and had no trouble negotiating the steps. There was an active construction site across the street and was our alarm clock every morning at 7:30 am. Since we were not at place during the day, it was not a real issue.
The furnishings are very sparse since the room is very small. The bathroom was nice with a great shower.
If you are tall, do not rent this space, since the dormers dominate the room and require some crouching. This is well represented in the photo, but being an air bnb newbie, it didn't register.
Overall, I enjoyed my experience.