Helen's is a lovely, private space just apart from the hustle of Edinburgh. While it's easily walkable to both bars/restaurants in New Town and Old Town (took me about 15 minutes), it's a quiet and comfortable spot to rest in between town outings.
Helen was also wonderful - very welcoming, and accommodating with arrival and departure. She also shared a whole slew of city tips and activity recommendations, all of which were spot on.
I'd absolutely stay again and would recommend it for any singles or couples traveling to Edinburgh!