I stayed at Estelle's for a week when I was relocating to Dublin from Dubai. It was my first time to Dublin, and Estelle and Alan made me feel very welcome.
On my first day Alan gave me a tour of the area, and showed me the bus routes. Estelle was very helpful and gave me tips on where to shop from for my new place.
Living with them felt like living at my own home.
Also, they have an amazing dog Leo, who I would play with when I stayed in :).
Lastly, their home is very well connected to city center by several buses. The bus stop is around a km away. The walk is beautiful and the neighborhood is very safe.
I would highly recommend their place for a short/long stay.