The place is generally pretty quiet, which is nice. The room itself is exactly as described. There's AC and a fan in the room, so controlling the temperature is easy. The location is great and close to a lot of good food and drinks options: for example, CBC/Smoke Shop BBQ/Bon Me/etc. are less than 5 minutes away from the airbnb, and it's a 15 to 20-minute walk to both the Kendall and Central T stations. I did not run into Nikita, but I got to chat with Carol, ans she has been very nice and friendly. Communication is great and Nikita and Carol make a point of answering your questions ASAP (I don't think I ever waited more than 5 minutes to get an answer from them through the app/website).
I had a good stay (definitely better than any of my other stays in a private room with airbnb), and I would definitely recommend staying at their place.