Great location for a single traveller or for a couple who wish to stay close to all the amenities (transport, restaurants, Harvard University itself) in Cambridge.
Charles and his family were the perfect hosts: welcoming and friendly and helpful with advice about transport, etc.
The room was very comfortable and clean. I really appreciated the small touches in it, such as a fridge with chilled bottles of water, just right for a humid early October in Cambridge.
I recommend Charles's place highly: excellent value and a lovely smiling welcome in store for you. Certainly, I'd return there again.