My sister and I spent 2 nights at Sheila's place and we can definitely recommend it for the ones who are fine to not stay directly in the center (which is only about 7-8 minutes away by car though ) and still visit all the beautiful sites of Killarney.
The room was mostly clean, quite big and very comfortable, it had its own bathroom with a shower, which was great!
Sheila was a very friendly and helping host! We could ask her for any question or doubt and she would immediately help and advise! We had a great time!