My boyfriend and I were visiting from New York for our anniversary, and our stay here was great. The location is literally right next to Andrew Station, which makes it easy access to places like Back Bay, Chinatown, etc. There is a convenient 7/11 nearby (it says 24/7 on google maps but its actually not 24/7 though), and a 24/7 dunkin donuts nearby in case you want quick things. If you are staying more than 4 days, I would suggest getting the Charlie Weekly Pass or the Charlie Card (the plastic charlie card is available at Downtown Crossing)
The house is on the older side but it definitely has its charm. room is on the second floor with nice windows and a beautiful painting. We didn't get to meet Manuela in person but she is definitely very kind from her messages. At first she did not respond to my first message, and I got slightly concerned about if our trip was booked. I messaged her a few days after and she responded, apologizing for missing the first one and answering all the questions I have. Manuela respected our privacy, and we respected hers as well, but she made herself available for any questions we may have had.
The place is very cleanly, and the bed was comfy. There is a couch (it's squeaky) and extra chair to sit with a closet that is spacious for suitcases and clothes to hang. The room we stayed in is right next to the kitchen with a microwave and fridge and a little hot stove.
Bathroom is very cleanly too. There's a chair to place your clothes on. I would suggest bringing your own hygiene like toothpaste and shampoo/conditioner. she has bar soap available.
Overall, I had a great time in Boston, and Manuela made my stay more comfortable and easy.