I stayed with Agnes and Edrick for four nights when I first arrived in the US and was in the process of setting up a longer-term stay. I arrived quite late (around 10:30pm), but Agnes was very accommodating and helped me move in and made sure I had everything I needed. She provided plenty of info before I arrived and was available to communicate with throughout my stay despite being away for the last two days.
The room is on the third floor, and the narrow staircase from the second floor can be a challenge if you have lots of luggage as I did, but this is mentioned in the room description. The room is large and open, with plenty of space to feel comfortable. I had full access to the kitchen and sole use of the upstairs bathroom, both of which were tidy and clean. All in all this was a great way to start my time in Boston & Cambridge, and I would recommend this to anyone looking for a convenient and quiet place near to Central.