We have just spent five days at Elaine's apartment, which was very clean, tidy and it had everything we were looking for. It is right next to the Trinity College area and a 15-minute walk to Temple Bar. The place is also well-connected to the airport (Airlink bus stop nearby) and there are two DART stations (Pearse and Tara) just a few minutes away. A supermarket is around the corner and you can easily walk to pubs or cafés if you want to eat something.
When we arrived to Dublin, Elaine was away for the weekend, but she had mailed the keys to us along with some instructions, so the place wasn't hard to find.
When we come back to Dublin we'll definitely stay at Elaine's again!