We had an incredible stay and I highly reccomend this flat. The flat and host were perfect and very helpful. In our case, it was cheaper than most hotels in the city as well!
The flat:
Gorgeous, comfortable, and in a great location. There are multiple grocers and restaurants within very short walking distance. The large windows overlook a park and offer a picturesque view. It is within walking distance of the city center (I had an injured knee/foot at the time and was able to comfortable walk it), but there is also a bus stop right across the street which not only takes you into the city quickly, but is also a very cheap and easy way to get to the Dublin Airport. You can also walk the opposite direction to a more quiet, less touristy area, which we really enjoyed for dinner time. The flat really enhanced our trip to Dublin by adding a sense of homeyness.

The host:
Karin was an absolute delight! She really made us feel like guests in her home. She made sure that we have enough towels and even checked in to see if we needed anything like extra milk for coffee during our stay. We arrived in Dublin earlier than the check-in time and on a day Karin was working outside the home, and she was kind enough to arrange for us to pick up the keys from someone else in the complex. She was also an incredible resource. She has typed up a very helpful "guidebook" for visitors in the flat. She also gave me recommendations on some other things I might enjoy when I told her I was interested in the literary history of the city.