Our family of 4 spent a full week in this apartment and it worked out great for us. I recommend it for 3 main reasons:
1) Great host: communicated a few days in advance, checked in with us after a few days, and again nearing checkout. Was available for questions and responses were quick. Thoughtful touches--especially loved not having to bring a blowdryer and the huge fluffy towels.
2) Location: We chose this because it was walking distance to most sights, but out of the primary bustle and noise of the tourist centre. We stayed in Dublin and took a few day trips out into other parts of the country. It was awesome to have a home base and not have to pack up and take our stuff everywhere. 15 min walk to Busaras and Connolly station as well as pick up point for Paddywagon tours. 25 min walk to Trinity College (and from there many of the major sights are in walking distance). LUAS stop very closeby. One block from the Liffey so we were able to walk back along the river each day. Three small markets within minutes including an M&S with many heat and serve meals. Several restaurants and coffee shops in the area. The only downside is that when there was a little noise from people coming home in the night, it was quite loud and echoey--sound really carried. Fortunately this was occasional and overall this is way quieter than staying closer in to the centre.
3) Security: I appreciated that the complex had an outer security gate, the building had a locked door, and then of course the apartment itself. I also like staying on upper floors so this was great.
I would definitely stay here again. If you are healthy and able to walk a little extra, you can walk most places from here and we saved a ton not having to eat in a restaurant for every meal.