Arrived on a Wednesday, Kieran met up with us and gave us a quick tour of the flat. He was very helpful in giving us tips on what to do and where to go, and more importantly how the locals behave, which was perfectly in line with the intention of our stay (a sort of study holiday for EFL students).
The place is wonderful, the position is great, just a 15-minute walk from the city centre and with a wonderful view from the roof garden (we actually caught a bit of Phil Collins' concert at Aviva Stadium from it). There is a score of supermarkets, restaurants and pharmacies in the area, as well as bus stops and Grand Canal train station.
The communication was very effective before, during and after our stay. We highly recommend Kieran as a host, and will definitely try to go back next year.