Helen and Alfred's apartment was absolutely lovely. It had everything we needed, including a small kitchen with a stocked fridge. The back garden was beautiful and you hardly felt like you were in the city at all; we sat out there for a small breakfast--picked up from local shops--every day.
In terms of location, the subway was within easy walking distance, but we found ourselves loving the neighbourhood so much that we actually spent a significant amount of our time just walking around nearby. Prospect Park is also very close, and worth checking out.
Helen and Alfred were both very kind. We felt completely at home during our stay, in large part thanks to their efforts.
Overall, we had a great stay, and I'd recommend this place to anyone!