Joan was very kind. She has 4 children and, to be fair, we stayed on a Friday and she apologized in the morning; however, the kids were constantly going up and down the stairs and opening and closing/slamming doors from 9 pm-~11 pm. Our room was just under the staircases so we heard it every time.
Otherwise, breakfast was lovely and the bed was comfortable. It is a good jumping off point for the Ring of Kerry.
I wish we had just waited to book. There were TONS of BnBs near Killarney. With it being March, most had vacancies and almost all were ~25€, including Joan's house which we paid 56 for through Airbnb.