The O'Keefe's place was great. Their apartment was comfy and very, very well located in central Cambdrige. It was a short walk to Harvard and MIT, and a few blocks away from a T station (and from there, a short trip to central Boston). We stayed for 8 nights and had the best of experiences. Kevin and her wife were excellent hosts; they even put some bread, philadelphia cheese and marmalade in the fridge so we had something to bite on the next morning (we had a really late arrival).
They also have the cutest of dogs. My wife and two daughters were delighted. We would definitely use their place again. Thanks!