Helen's is absolutely amazing! Cute, clean, a lot of character and so close to everything! We really enjoyed this whole neighborhood as it is a little more low key than downtown, but still very active and fun. If you're a runner, there is a great 2-3 mile trail right out the door, plenty of restaurants, bars, etc. we even walked from downtown. Uber and Lyfts are easily available as well. The main reason we chose this place was the fact it was so close to Fenway, little did we know it would allow us to do so much more! We always felt very safe as well.
Helen was great and quick to respond to everything! Her neighbor is fabulous as well :). I would go back here every time I stay in Boston!