Charles and Christiana are lovely hosts. They did everything to make us comfortable. We stayed in the Sigma room. It is not a very big room but it was quite adequate. It has a queen-size bed which was very comfortable. It has heat and AC. There is a desk and chair as well as another chair. There also is a mini-refrigerator. The bathroom is clean and has a walk-in stall shower. The room is on the 2nd floor with fairly steep steps that might be problematic for someone who has difficulty climbing stairs. The home is in a fabulous location about 5 blocks from the Harvard campus. If you come by car, parking in the neighborhood requires a local permit which they can provide for an $8/day fee - well worth it. The house address is 4A and it is through a gate and behind 4 Mt. Auburn Street. You can park your car to unload in the parking lot next door at 8 Mt. Auburn Street since you are unable to stop on the street in front of the house. We enjoyed our stay at this Airbnb.