Rosheens place is great for a stay when you visit Dublin. We stayed for three nights, three persons. She and her family are very nice and friendly people, taking care of their guests. Sleeping room and bath room both very very clean and comfortable. Breakfast was also great, she even prepared breakfast for us for our quite early leave, thank you again for that. Based on this experience we can recommend Rosheens place and would stay there again!
Public transportation is also very good:
You can reach the airport with a direct bus (102) in about 40 minutes, very convenient.
Dublin city center can be reached by direct train in about 40 minutes. Bus 42 is also going into that direction, takes maybe a little longer, did not use, but good to know.
Both bus and train station are about 5 minutes walk from Rosheens place, and during that walk you pass several (super)markets and restaurants, so very good place to stay.
As written before, we would highly recommend Rosheens place!