Susan is a great host, very friendly and polite. She answers questions quickly and showed as around the apartment personally. The house is very beautiful with an idyllic garden. It is equipped with everything one might need and also offers several streaming services in case of bad weather.
Killester is not really central, but by train or bus you can get to Dublin's centre in about 10 to 15 minutes. The district is rather quiet but there are some nice pubs around, as well as a beautiful park.