Caroline was a great host! She was home at the time we arranged to meet and my mom and I felt very safe and comfortable in her home and neighborhood. We walked from her house to many places in Harvard Square in about 15-20 minutes. We had our own set of keys and could come and go as we pleased and Caroline was very kind to provide us with breakfast and good conversation in the morning! We stayed in the bedroom with two twins which was very warm and cozy. No problems at all. Definitely recommend staying here! Thanks again!