We had a month long stay at Bernie's apartment in Rathmines. It's so cozy, very functional and well equipped. You can walk from there to many touristical places like St Patrick's Cathedral, Temple bar, St. Stephen's green or the museums at downtown. There are also 2 bus stations close taking an 8 min walk, some nice restaurants, pubs and supermarkets. You can get from the airport to the apartment on bus 16. Bernie is a lovely host! super friendly, she answered immediatly our questions and solved every single issue very fast. 100% recommended.